Question

1-2ab-(a square + b square ) =?

Answer 1

1-2ab-(a²+b²)

= 1-2ab-a²-b²

=1-(2ab+a²+b²)

=1-(a+b)²

=(1+a+b) × (1-a-b)

Hope this helps you friend
Thanks ✌️ ✌️

Answer 2

1-2ab-(a²+b²)

= 1-2ab-a²-b²

=1-(2ab+a²+b²)

=1-(a+b)²

=(1+a+b) × (1-a-b)

Hope this helps you friend