Question

(ii) 1 - 2a - 2b - 3(a + b)2.​

Answer 1

Step-by-step explanation:

1−2a−2b−3(a+b)

2

=−3(a+b)

2

−2(a+b)+1

=−3(a+b)

2

−3(a+b)+(a+b)+1

=−3(a+b)((a+b)+1)+((a+b)+1)

=((a+b)+1)(1−3(a+b))

=(a+b+1)(1−3a−3b)