Question

1-2a- 2b - 3(a+b)^2​

Answer 1

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)

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