Question

Whats the answer?

1. (∗ +2b)^2 = a^2+4ab+4b^2

Answer 1

Answer:

* = a

Step-by-step explanation:

$(a+2b)(a+2b)\\a^{2} +2b+2b+4b^{2}\\a^{2}+4b+4b^{2}$