Question

factorise
1. a(3a-2) -1
2 . 3 - a(4 + 7a ) ​

Answer 1

Step-by-step explanation:

1. a(3a-2) - 1

=3a^2 - 2a - 1

= 3a^2 - 3a + a - 1

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

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