2. Polynomials
easy

અવયવ પાડો : $12 x^{2}-7 x+1$

Option A
Option B
Option C
Option D

Solution

અહી, $x^{2}$ નો સહગુણક $12$ છે.

$x$ નો સહગુણક $7$ છે અને અચળ $1$ છે.

$12 x^{2}-7 x+1$ ને $a x^{2}+b x+c$ સાથે સરખાવતાં $a=12, \,b=-\,7, \,c=1$

હવે $l+m=b=-7$

$l m=a c=12 \times 1$

$l=(-4)$ અને $m=(-3)$

$b=-7=-4-3$

હવે $12 x^{2}-7 x+1=12 x^{2}-4 x-3 x+1$

$=4 x(3 x-1)-1(3 x-1)$

$=(3 x-1)(4 x-1)$

આમ, $12 x^{2}-7 x+1=(3 x-1)(4 x-1)$

Standard 9
Mathematics

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