Question

diff.(√a+√x)/(√a-√x)

Answer 1

From identity a^2-b^2=(a-b)(a+b)

a=root a

b=root b

So,

(root a+root b)(root a-root b)

=(root a)^2-(root b)^2

=a-b

Hope it helps☺

Answer 2

a+x=a-x

so a=a

hence proved.