Question

Responder:
1. (a+b)(a+b)
2. (m-n)(m-n)
3. (x+y)(x-y)
4. (a+b)(a+b)(a+b)
5. (8x2y3)3

Answer 1

1.- a²+2ab+b²
2.-m²-2mn+n²
3.-x²-y²
4.-a³+3a²b+3ab²+b³
5.-144xy

Answer 2

1:(a+b)²
=a²+2.a.b+b²=a²+2ab+b²

2:(m-n)²
=m²-2.m.n+n²=m²-2mn+n²

3:x²-y²

4:(a+b)³

5:3.(8.2.3xy)=3.48xy=144xy