Question

(root a+root b)(root a-root b)​

Answer 1

Answer:

(√a+√b)(√a-√b)

(√a)^2-(√b)^2

a-b

Answer 2

Answer: $a-b$

Step-by-step explanation:

We can use the difference of squares formula here, which states that

$a^2-b^2 = (a+b)(a-b)$

Therefore, $(\sqrt{a}+\sqrt{b})(\sqrt{a}-\sqrt{b})$ is equal to

$(\sqrt{a})^2 -(\sqrt{b})^2$

which can be simplified into

$a-b$