Question

Factorize a^2-4a^2+12-3a

Answer 1

Answer:

-3(a-3)(a+4)

Step-by-step explanation:

a^2-4a^2+12-3a

=3a^2+12-3a

=-3(a^2+a-12)

=-3(a^2+4a-3a+12)

=-3(a(a+4)-3(a+4))

=-3(a-3)(a+4)

Answer 2

Answer:

a^2-4a^2-3a+12

a(a-4)-3(a-4)

(a-4)(a-3)

a=4;a=3

Hope it helps.