Question

simplify (√7+√5)(√5-√7)​

Answer 1

Answer:

it can be written as (√5+√7)(√5-√7) =(√5)^2-(√7)^2 = 5-7 = -2 answer

[using identity, (a+b)(a-b) =a^2-b^2]

Step-by-step explanation:

Hope it helps :-))

Answer 2

Answer:

2.

Step-by-step explanation:

Identity: (root a+root b) + (root a-root b) = a-b

(root7+root5) + (root7-root5) = 7-5 = 2