Question

13) Expand to simplify. (i) (a + b)(a - b)(a + b)²​

Answer 1

Answer;

Hopefully it will be helpful.

Answer 2

Answer:

$a^4-b^4+2a^3b-2ab^3$

Step-by-step explanation:

$\\ (a+b)(a-b)(a+b)^2\\ (a+b)(a-b)(a^2+b^2+2ab)\\(a^2-b^2)(a^2+b^2+2ab)\\a^4+b^2a^2+2a^3b-b^2a^2-b^4-2ab^3\\a^4-b^4+2a^3b-2ab^3$