Question

what is the answer of a^2+b^2-(a-b)^2

Answer 1

2b^2. This is because you have a positive a^2 and a negative so they cross it one another so it just leaves the b’s.

Answer 2

Answer:

2ab

Step-by-step explanation:

a²+b²-(a-b)²=

=a²+b²-(a²-2ab+b²)

=a²+b²-a²+2ab-b²

=2ab