Question

If x=√7+√5 and y=√7-√5. Evaluate [x^2 - y^2]^2

Answer 1

(x^2-y^2)^2={(√7+√5+√7-√5)×(√7+√5-√7+√5)}^2
={2√7×2√5)^2
=(4√35)^2
=16×35
=560
is your answer

Answer 2

Hope it helps .
Pls mark me as brainliest.