Question

Factorisation
7ax²+14ax+7a

Answer 1

$a(7x {}^{2} + 14x + 7 ) = 0$

$a(x {}^{2} + 2x + 1) = 0$

$a(x + 1) = 0$

$x = - 1$

and A will become 0 after dividing by 0