Question

solve ( a+ 2b) + ( a_ 2b)

Answer 1

=(a) ²-(2b)²
=(a+2b) (a-2b)

Answer 2

hey mate here is your answer

$= {a}^{2} - 2ab \: + 2ab \: {-(2b)} ^{2} \\ \\ \\ = {a}^{2} - {2b}^{2}$
hope this helps