Question

Factorise:
3-a(4+7a)

Answer 1

Hope it helps u
and it is correct

Answer 2

   3 - a ( 4 + 7a )

= 3 - 4a - 7a.a

= 3 - 4a -7a²

= 3 + ( 3a - 7a ) - 7a²

= 3 ( 1 + a ) - 7a ( 1 + a )

= ( 3 - 7a ) ( 1 + a ) Answer