Question

BRAINLIEST QUESTION PLEASE DO Q4 .

Answer 1

for rest. use the following identities

1) (a+b)² = a²+b²+2ab

2) (a-b)²= a²+b²-2ab

3) (x+a)(x+b)=x²+(a+b)x+ab

4) a²-b²= (a+b)(a-b)