Question

Root a+2b multiply by root a-2b ​

Answer 1

Well, let us see the answer (solution) to this question.

(√a + 2b) × (√a - 2b)

= (√a)^2 - (2b)^2

= a - 4 b^2

Thus, your answer is a - 4 b^2.

In this solution the symbol "^" means '' raised to the power"

2^4 = 2 raised to the power 4 = 16