(A + B)2 = A2 + 2AB + B2 5. (A – B)3 = A3 – 3A2B + 3AB2 – B3

1. (A + B)

2

= A

2

+ 2AB + B

2

5. (A – B)

3

= A

3

– 3A

2

B + 3AB

2

– B

3