{"id":625591,"date":"2023-09-07T08:38:56","date_gmt":"2023-09-07T08:38:56","guid":{"rendered":"https:\/\/www.indcareer.com\/schools\/?p=625591"},"modified":"2023-09-07T08:39:01","modified_gmt":"2023-09-07T08:39:01","slug":"kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad","status":"publish","type":"post","link":"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/","title":{"rendered":"KC Sinha: Exercise 3.2 &#8211; Mathematics Solution Class 9 Chapter 3 \u092c\u0939\u0941\u092a\u0926"},"content":{"rendered":"\n\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-1\">Question 1<\/h4>\n\n\n\n<p>\u0930\u093f\u0915\u094d\u0924 \u0938\u094d\u0925\u093e\u0928\u094b \u0915\u094b \u092d\u0930\u0947:<br><strong>(i)<\/strong> x<sup>2<\/sup>+2x-3 \u0915\u094b x-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932=__<br>Sol :<br>p(x)=x<sup>2<\/sup>+2x-3<br>x-1=0<\/p>\n\n\n\n<p>x=1 \u092a\u0930,<\/p>\n\n\n\n<p>p(1)=(1)<sup>2<\/sup>+2(1)-3<br>=1+2-3<br>=0<\/p>\n\n\n\n<p><strong>(ii)<\/strong> \u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 x-2 \u0939\u0948 \u0924\u094b p(2)=__<br>Sol :<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-2\">Question 2<\/h4>\n\n\n\n<p>y<sup>4<\/sup>+3y<sup>2<\/sup>+2y+1 \u0915\u094b y-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932 \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e ?<br>Sol :<br>p(y)=y<sup>4<\/sup>+3y<sup>2<\/sup>+2y+1<br>y-1=0<br>y=1<\/p>\n\n\n\n<p>p(1)=(1)<sup>4<\/sup>+3(1)<sup>2<\/sup>+2(1)+1<br>=1-3+2+1<br>=1<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-3\">Question 3<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-4\">Question 4<\/h4>\n\n\n\n<p>\u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u0947 \u0932\u093f\u090f p(-1)=3 \u0939\u094b \u0924\u094b \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u094b x+1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932 \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e?<br>Sol :<br>x+1=0<br>x=-1<\/p>\n\n\n\n<p>&nbsp;\u0936\u0937\u092b\u0932=3<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-5\">Question 5<\/h4>\n\n\n\n<p>\u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u0947 \u0932\u093f\u090f $p\\left(\\frac{-2}{3}\\right)=0$ \u0924\u094b \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0932\u093f\u0916\u0947\u0964<br>Sol :<br>$x=-\\frac{2}{3}$<br>3x=-2<br>3x+2=0<\/p>\n\n\n\n<p>3x+2<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-6\">Question 6<\/h4>\n\n\n\n<p>\u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u0947 \u0932\u093f\u090f p(-3)=2 \u0939\u094b \u0924\u094b p(x)-2 \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0932\u093f\u0916\u0947 \u0964<br>Sol :<br>x=-3 , p(-3)=2<\/p>\n\n\n\n<p>p(x)-2=p(-3)-2<br>=2-2<br>=0<\/p>\n\n\n\n<p>x=-3<br>x+3=0<\/p>\n\n\n\n<p>\u2234x+3 , p(x)-2 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-7\">Question 7<\/h4>\n\n\n\n<p>x<sup>3<\/sup>+3x<sup>2<\/sup>+3x+1 \u0915\u094b \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932 \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f \u0964<br><strong>(i)<\/strong> x+1<br>Sol :<br>p(x)=x<sup>3<\/sup>+3x<sup>2<\/sup>+3x+1<br>x+1=0<br>x=-1<\/p>\n\n\n\n<p>p(-1)=(-1)<sup>3<\/sup>+3(-1)<sup>2<\/sup>+3(1)+1<\/p>\n\n\n\n<p>=-1+3-3+1<\/p>\n\n\n\n<p>=0<\/p>\n\n\n\n<p><strong>(ii)<\/strong> $x-\\frac{1}{2}$<br>Sol :<br>$x-\\frac{1}{2}=0$<\/p>\n\n\n\n<p>$x=\\frac{1}{2}$<\/p>\n\n\n\n<p>$p\\left(\\frac{1}{2}\\right)=\\left(\\frac{1}{2}\\right)^3+3\\left(\\frac{1}{2}\\right)^2+3\\left(\\frac{1}{2}\\right)+1$<\/p>\n\n\n\n<p>$=\\frac{1}{8}+\\frac{3}{4}+\\frac{3}{2}+1$<\/p>\n\n\n\n<p>$=\\frac{1+6+12+8}{8}=\\frac{27}{8}$<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-12\">Question 12<\/h4>\n\n\n\n<p>\u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u092a\u094d\u0930\u092e\u0947\u092f \u0915\u093e \u092a\u094d\u0930\u092f\u094b\u0917 \u0915\u0930 \u092c\u0924\u093e\u092f\u0947 \u0915\u093f \u0915\u094d\u092f\u093e x-1 \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 ?<br><strong>(i)<\/strong> x<sup>3<\/sup>+x<sup>2<\/sup>-2x+1<br>Sol :<br>x-1=0<br>x=1<br>p(x)=x<sup>3<\/sup>+x<sup>2<\/sup>-2x+1<br>p(1)=1<sup>3<\/sup>+1<sup>2<\/sup>-2(1)+1<\/p>\n\n\n\n<p>=1+1-2+1<\/p>\n\n\n\n<p>=1<\/p>\n\n\n\n<p>x-1,x<sup>3<\/sup>+x<sup>2<\/sup>-2x+1 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0902\u0921 \u0928\u0939\u0940 \u0939\u0948 \u0964<\/p>\n\n\n\n<p><strong>(ii)<\/strong> 8x<sup>4<\/sup>-12x<sup>3<\/sup>+18x+14<br>Sol :<\/p>\n\n\n\n<p><strong>(iii)<\/strong> x<sup>3<\/sup>+8x<sup>2<\/sup>-7x-2<br>Sol :<\/p>\n\n\n\n<p><strong>(iv)<\/strong> $2\\sqrt{2}x^3+5\\sqrt{2}x^2-7\\sqrt{2}$<br>Sol :<br>x-1=0<br>x=1<\/p>\n\n\n\n<p>p(x)=$2\\sqrt{2}x^3+5\\sqrt{2}x^2-7\\sqrt{2}$<\/p>\n\n\n\n<p>p(1)=$2\\sqrt{2}(1)^3+5\\sqrt{2}(1)^2-7\\sqrt{2}$<\/p>\n\n\n\n<p>=2\u221a2+5\u221a2-7\u221a2<\/p>\n\n\n\n<p>=0<\/p>\n\n\n\n<p>\u2234x-1 , 2\u221a2x<sup>3<\/sup>+5\u221a2x<sup>3<\/sup>-7\u221a2 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-13\">Question 13<\/h4>\n\n\n\n<p>\u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u092a\u094d\u0930\u092e\u0947\u092f \u0932\u093e\u0917\u0942 \u0915\u0930\u0915\u0947 \u092c\u0924\u093e\u0907\u090f \u0915\u093f \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0938\u094d\u0925\u093f\u0924\u093f\u092f\u094b \u092e\u0947 \u0938\u0947 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947 g(x),p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u092f\u093e \u0928\u0939\u0940<\/p>\n\n\n\n<p><strong>(i) p(x)=2x<sup>3<\/sup>+x<sup>2<\/sup>-2x-1 , g(x)=x+1<\/strong><\/p>\n\n\n\n<p>Sol :<br>x+1=0<br>x=-1<\/p>\n\n\n\n<p>p(-1)=2(-1)<sup>3<\/sup>+(-1)<sup>2<\/sup>-2(-1)-1<br>=-2+1+2-1<br>=0<\/p>\n\n\n\n<p>g(x),p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948<\/p>\n\n\n\n<p><strong>(ii) p(x)=x<sup>3<\/sup>+3x<sup>2<\/sup>+3x+1 , g(x)=x+2<\/strong><\/p>\n\n\n\n<p>Sol :<\/p>\n\n\n\n<p><strong>(iii) p(x)=x<sup>3<\/sup>-4x<sup>2<\/sup>+x+6 , g(x)=x-3<\/strong><br>Sol :<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-14\">Question 14<\/h4>\n\n\n\n<p><strong>(i)<\/strong> \u091c\u093e\u0901\u091a \u0915\u0940\u091c\u093f\u090f 7+3x,3x<sup>3<\/sup>+7x \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u092f\u093e \u0928\u0939\u0940\u0964<br>Sol :<br>7+3x=0<br>3x=-7<br>$x=\\frac{-7}{3}$<\/p>\n\n\n\n<p>p(x)=3x<sup>3<\/sup>+7x<br>$p\\left(\\frac{-7}{3}\\right)=3\\left(\\frac{-7}{3}\\right)^3+7\\left(\\frac{-7}{3}\\right)$<br>$=3\\left(\\frac{-343}{7}\\right)-\\frac{49}{3}$<br>$=\\frac{-343}{9}-\\frac{49}{3}$<\/p>\n\n\n\n<p>7+3x, 3x<sup>3<\/sup>+7x \u0915\u0940 \u0917\u0941\u0923\u0928\u0916\u0902\u0921 \u0928\u0939\u0940 \u0939\u0948 \u0964<\/p>\n\n\n\n<p><strong>(ii)<\/strong>&nbsp;\u091c\u093e\u0901\u091a \u0915\u0940\u091c\u093f\u090f \u0915\u093f x+2 \u092c\u0939\u0941\u092a\u0926\u094b x<sup>3<\/sup>+3x<sup>2<\/sup>+5x+6 \u0914\u0930 2x+4 \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u092f\u093e \u0928\u0939\u0940 \u0964<br>Sol :<br>x+2=0<br>x=-2<\/p>\n\n\n\n<p>p(x)=x<sup>3<\/sup>+3x<sup>2<\/sup>+5x+6 , g(x)=2x+4<br>p(-2)=(-2)<sup>3<\/sup>+3(-2)<sup>2<\/sup>+5(-2)+6<br>=-8+12-10+6<br>=-18+18<br>=0<\/p>\n\n\n\n<p>x+2, p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<p>g(-2)=2(-2)+4<br>=-4+4<br>=0<\/p>\n\n\n\n<p>x+2,g(x) \u0915\u093e&nbsp; \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948&nbsp;\u0964<\/p>\n\n\n\n<p><strong>(iii)<\/strong>&nbsp;\u091c\u093e\u0901\u091a \u0915\u0940\u091c\u093f\u090f \u0915\u093f \u092c\u0939\u0941\u092a\u0926\u094b q(t)=4t<sup>3<\/sup>+4t<sup>2<\/sup>-t-1 , 2t+1 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u092f\u093e \u0928\u0939\u0940 \u0964<\/p>\n\n\n\n<p>Sol :<\/p>\n\n\n\n<p>2t+1<\/p>\n\n\n\n<p>2t=-1<\/p>\n\n\n\n<p>$t=-\\frac{1}{2}$<\/p>\n\n\n\n<p>$q\\left(-\\frac{1}{2}\\right)=4\\left(-\\frac{1}{2}\\right)^2-\\left(-\\frac{1}{2}\\right)-1$<br>$=4\\left(-\\frac{1}{8}\\right)+4\\left(\\frac{1}{4}\\right)+\\frac{1}{2}+1$<br>$=-\\frac{1}{2}+1+\\frac{1}{2}-1$<br>=0<\/p>\n\n\n\n<p>\u0905\u0924\u0903 q(t) , 2t+1 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-18\">Question 18<\/h4>\n\n\n\n<p>k \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0940\u091c\u093f\u090f \u091c\u092c\u0915\u093f \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0938\u094d\u0925\u093f\u0924\u093f\u092f\u094b&nbsp; \u092e\u0947 \u0938\u0947 \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947 (x-1) , p(x) \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u094b<br><strong>(i)<\/strong> p(x)=2x<sup>2<\/sup>+kx+\u221a2<br>x-1=0<br>x=1<\/p>\n\n\n\n<p>x-1 , p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<p>p(1)=0<br>2(1)<sup>2<\/sup>+k(1)+\u221a2=0<br>2+k+\u221a2=0<br>k=-(2+\u221a2)<br>=-2-\u221a2<\/p>\n\n\n\n<p><strong>(ii)<\/strong> p(x)=kx<sup>2<\/sup>-3x+k<br>Sol :<br>x-1=0<br>x=1<\/p>\n\n\n\n<p>x-1 , p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<p>p(1)=0<br>k(1)<sup>2<\/sup>-3(1)+k=0<br>k-3+k=0<br>2k=3<br>$k=\\frac{3}{2}$<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-19\">Question 19<\/h4>\n\n\n\n<p><strong>(a)<\/strong> \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u092c\u0939\u0941\u092a\u0926\u094b\u0902 \u092e\u0947 \u092f\u0926\u093f \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092c\u0939\u0941\u092a\u0926 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u092e\u094d\u0921 x-2 \u0939\u094b, \u0924\u094b \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947 a \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947 \u0964<br><strong>(i)<\/strong> x<sup>2<\/sup>-3x+5a<br><strong>(ii)<\/strong> x<sup>3<\/sup>-2ax<sup>2<\/sup>+ax-1<br>Sol :<br>(ii) x-2=0<br>x=2<br>x=2<\/p>\n\n\n\n<p>x-2 , \u092c\u0939\u0941\u092a\u0926 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948<\/p>\n\n\n\n<p>(2)<sup>3<\/sup>-2a(2)<sup>2<\/sup>+a(2)-1<br>-6a+7=0<br>-6a=-7<br>$a=\\frac{7}{6}$<\/p>\n\n\n\n<p><strong>(b)<\/strong> \u092f\u0926\u093f x-1 \u092c\u0939\u0941\u092a\u0926 ax<sup>3<\/sup>-4ax+4a-1 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0924\u094b a \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947 \u0964<\/p>\n\n\n\n<p><strong>(c)<\/strong> \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u092c\u0939\u0941\u092a\u0926\u094b \u092e\u0947 \u092f\u0926\u093f x+a \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092c\u0939\u0941\u092a\u0926 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 , \u0924\u094b \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u0938\u094d\u0925\u093f\u0924\u093f \u092e\u0947 a \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947 \u0964<br><strong>(i)<\/strong> x<sup>3<\/sup>+ax<sup>2<\/sup>-2x+a+4<br><strong>(ii)<\/strong> x<sup>4<\/sup>-a<sup>2<\/sup>x<sup>2<\/sup>+3x-a<\/p>\n\n\n\n<p>Sol :<br>(i)<br>x+a=0<br>x=-a<\/p>\n\n\n\n<p>x+a \u092c\u0939\u0941\u092a\u0926 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<p>(-a)<sup>3<\/sup>+a(-a)<sup>2<\/sup>-2(-a)+a+4=0<br>3a=-4<br>$a=-\\frac{4}{3}$<\/p>\n\n\n\n<p><strong>(d)<\/strong> \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u092c\u0939\u0941\u092a\u0926\u094b \u092e\u0947 \u092f\u0926\u093f x-a \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 \u092c\u0939\u0941\u092a\u0926 \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 , \u0924\u094b a \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947 \u0964<\/p>\n\n\n\n<p><strong>(i)<\/strong> x<sup>3<\/sup>-a<sup>2<\/sup>x+x+2<\/p>\n\n\n\n<p><strong>(ii)<\/strong> x<sup>5<\/sup>-a<sup>2<\/sup>x<sup>3<\/sup>+2x+a+4<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-20\">Question 20<\/h4>\n\n\n\n<p>\u092f\u0926\u093f p(x)=x<sup>3<\/sup>+kx<sup>2<\/sup>+hx+6 \u0914\u0930 x+1 \u0924\u0925\u093e x-2 , p(x) \u0915\u0947 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 , \u0924\u094b h \u0914\u0930 k \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947 \u0964<br>Sol :<br>x+1=0<br>x=-1<\/p>\n\n\n\n<p>x+1,p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0902\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<p>(-1)<sup>3<\/sup>+k(-1)<sup>2<\/sup>+h(-1)+6<br>-1+k-h+6=0<br>k-h+5=0<br>k-h=-5<br>k=h-5..(i)<\/p>\n\n\n\n<p>x-2=0<br>x=2<br>x-2, p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0902\u0921 \u0939\u0948 \u0964<\/p>\n\n\n\n<p>(2)<sup>3<\/sup>+k(2)<sup>2<\/sup>+h(2)+6=0<br>8+4k+2h+6=0<br>4k+2h+14=0<br>2(2k+h+7)=0<br>2k+h+7=0<\/p>\n\n\n\n<p>k \u0915\u093e \u092e\u093e\u0928 \u0930\u0916\u0928\u0947 \u092a\u0930,<br>2(h-5)+h+7=0<br>2h-10+h+7=0<br>3h-3=0<br>3h=3<br>$h=\\frac{3}{3}$<br>h=1<\/p>\n\n\n\n<p>h \u0915\u093e \u092e\u093e\u0928 \u0938\u092e\u0940\u0915\u0930\u0923 (i) \u092e\u0947 \u0930\u0916\u0928\u0947 \u092a\u0930,<br>k=h-5<br>k=1-5<br>k=-4<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-23\">Question 23<\/h4>\n\n\n\n<p>\u092f\u0926\u093f (x-1) \u0924\u0925\u093e (x+4) \u092c\u0939\u0941\u092a\u0926 p(x)=(x<sup>2<\/sup>-3x+2)(x<sup>2<\/sup>+7x+a) \u0914\u0930 q(x)=(x<sup>2<\/sup>+5x+4)(x<sup>2<\/sup>-5x+b) \u0915\u0947 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 \u0939\u0948 \u0924\u094b a \u0914\u0930 b \u0915\u093e \u092e\u093e\u0928 \u091c\u094d\u091e\u093e\u0924 \u0915\u0930\u0947 \u0964<br>Sol :<br>x-1=0<br>x=1<\/p>\n\n\n\n<p>x-1,q(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0902\u0921 \u0939\u0948 \u0964<br>(1<sup>2<\/sup>-5(1)+4)(1<sup>2<\/sup>-5(1)+b)=0<br>10(-4+b)=0<\/p>\n\n\n\n<p>-4+b=0<\/p>\n\n\n\n<p>b=4<\/p>\n\n\n\n<p>x+4=0<br>x=-4<\/p>\n\n\n\n<p>x+4,p(x) \u0915\u093e \u0917\u0941\u0923\u0928\u0916\u0902\u0921 \u0939\u0948 \u0964<br>((-4)<sup>2<\/sup>-3(-4)+2)(1<sup>2<\/sup>+7(-4)+a)=0<br>30(-12+a)=0<br>-12+a=0<br>a=12<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-question-24\">Question 24<\/h4>\n\n\n\n<p>\u092f\u0926\u093f f(x)=x<sup>2<\/sup>+px+q ,g(x)=x<sup>2<\/sup>+lx+m \u0924\u0925\u093e \u092a\u094d\u0930\u0924\u094d\u092f\u0947\u0915 x+a \u0938\u0947 \u0935\u093f\u092d\u093e\u091c\u093f\u0924 \u0939\u094b\u0924\u093e \u0939\u0948 \u0924\u094b \u0926\u093f\u0916\u093e\u092f\u0947 \u0915\u093f $a=\\frac{m-q}{l-p}$<br>Sol :<br>x+a=0<br>x=-a<\/p>\n\n\n\n<p>x+a , \u0926\u094d\u0935\u093e\u0930\u093e f(x) \u0924\u0925\u093e g(x) \u0926\u094b\u0928\u094b \u0935\u093f\u092d\u093e\u091c\u0940\u0924 \u0939\u0948 \u0964<br>(-a)<sup>2<\/sup>+p(-a)+q=(-a)<sup>2<\/sup>+l(-a)+m<\/p>\n\n\n\n<p>(-a)<sup>2<\/sup>-pa+q=(-a)<sup>2<\/sup>-la+m<\/p>\n\n\n\n<p>la-pa=m-q<\/p>\n\n\n\n<p>(l-p)a=m-q<\/p>\n\n\n\n<p>$a=\\frac{m-q}{l-p}$<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/kc-sinha-solutions\/\">KC Sinha Solutions<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/kc-sinha-solution-for-class-9-hindi\/\">KC Sinha Class 9 Solutions<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Question 1 \u0930\u093f\u0915\u094d\u0924 \u0938\u094d\u0925\u093e\u0928\u094b \u0915\u094b \u092d\u0930\u0947:(i) x2+2x-3 \u0915\u094b x-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932=__Sol :p(x)=x2+2x-3x-1=0 x=1 \u092a\u0930, p(1)=(1)2+2(1)-3=1+2-3=0 (ii) \u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u093e \u090f\u0915 \u0917\u0941\u0923\u0928\u0916\u0923\u094d\u0921 x-2 \u0939\u0948 \u0924\u094b p(2)=__Sol : Question 2 y4+3y2+2y+1 \u0915\u094b y-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932 \u0915\u094d\u092f\u093e \u0939\u094b\u0917\u093e ?Sol :p(y)=y4+3y2+2y+1y-1=0y=1 p(1)=(1)4+3(1)2+2(1)+1=1-3+2+1=1 Question 3 Question 4 \u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u0947 \u0932\u093f\u090f p(-1)=3 [&hellip;]<\/p>\n","protected":false},"author":302,"featured_media":625593,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"newspack_featured_image_position":"","newspack_post_subtitle":"","newspack_article_summary_title":"Overview:","newspack_article_summary":"","newspack_hide_updated_date":false,"newspack_show_updated_date":false,"footnotes":""},"categories":[921],"tags":[],"boards":[],"class_list":["post-625591","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-9","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>KC Sinha: Exercise 3.2 - Mathematics Solution Class 9 Chapter 3 \u092c\u0939\u0941\u092a\u0926 - IndCareer Schools<\/title>\n<meta name=\"description\" content=\"Question 1 \u0930\u093f\u0915\u094d\u0924 \u0938\u094d\u0925\u093e\u0928\u094b \u0915\u094b \u092d\u0930\u0947:(i) x2+2x-3 \u0915\u094b x-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932=__Sol :p(x)=x2+2x-3x-1=0 x=1 \u092a\u0930, p(1)=(1)2+2(1)-3=1+2-3=0 (ii) \u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u093e \u090f\u0915\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KC Sinha: Exercise 3.2 - Mathematics Solution Class 9 Chapter 3 \u092c\u0939\u0941\u092a\u0926\" \/>\n<meta property=\"og:description\" content=\"Question 1 \u0930\u093f\u0915\u094d\u0924 \u0938\u094d\u0925\u093e\u0928\u094b \u0915\u094b \u092d\u0930\u0947:(i) x2+2x-3 \u0915\u094b x-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932=__Sol :p(x)=x2+2x-3x-1=0 x=1 \u092a\u0930, p(1)=(1)2+2(1)-3=1+2-3=0 (ii) \u092f\u0926\u093f \u092c\u0939\u0941\u092a\u0926 p(x) \u0915\u093e \u090f\u0915\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/\" \/>\n<meta property=\"og:site_name\" content=\"IndCareer Schools\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/indcareer\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-07T08:38:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-07T08:39:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/09\/indcareer-schools-2-6-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"901\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Pooja\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@indcareer\" \/>\n<meta name=\"twitter:site\" content=\"@indcareer\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pooja\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/\"},\"author\":{\"name\":\"Pooja\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/#\/schema\/person\/d6945cf059726f162259ba738092301e\"},\"headline\":\"KC Sinha: Exercise 3.2 &#8211; Mathematics Solution Class 9 Chapter 3 \u092c\u0939\u0941\u092a\u0926\",\"datePublished\":\"2023-09-07T08:38:56+00:00\",\"dateModified\":\"2023-09-07T08:39:01+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/\"},\"wordCount\":698,\"publisher\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/09\/indcareer-schools-2-6-scaled.jpg\",\"articleSection\":[\"class 9\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/\",\"url\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/\",\"name\":\"KC Sinha: Exercise 3.2 - Mathematics Solution Class 9 Chapter 3 \u092c\u0939\u0941\u092a\u0926 - IndCareer Schools\",\"isPartOf\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/kc-sinha-exercise-3-2-mathematics-solution-class-9-chapter-3-bahupad\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/09\/indcareer-schools-2-6-scaled.jpg\",\"datePublished\":\"2023-09-07T08:38:56+00:00\",\"dateModified\":\"2023-09-07T08:39:01+00:00\",\"description\":\"Question 1 \u0930\u093f\u0915\u094d\u0924 \u0938\u094d\u0925\u093e\u0928\u094b \u0915\u094b \u092d\u0930\u0947:(i) x2+2x-3 \u0915\u094b x-1 \u0938\u0947 \u092d\u093e\u0917 \u0926\u0947\u0928\u0947 \u092a\u0930 \u0936\u0947\u0937\u092b\u0932=__Sol :p(x)=x2+2x-3x-1=0 x=1 \u092a\u0930, 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