Question

factorise:
(a)12^-7x+1​

Answer 1

$\large\fbox\red{AnsweR}$

$\sf\:12x^{2}-7x+1$

$\sf⟹\:12x^{2}-(4+3)x+1$

$\sf⟹\:12x^{2}-4x-3x+1$

$\sf⟹\:4x(3x-1)-1(3x-1)$

$\sf⟹\:(4x-1)(3x-1)$

$\sf\:Either\:4x-1=0$

$\sf⟹\:4x=1$

$\tt\pink{⟹\:x=\frac{1}{4}}$

$\sf\:oR\:3x-1=0$

$\sf⟹\:3x=1$

$\tt\pink{⟹\:x=\frac{1}{3}}$

• Thnku :)