Question

Can somebody please give the answer of this sum with the explanation

Answer 1

Explanation:

We know that (a-b)(a+b) = a² - b² and here is given such form.

So given = (x²)² - (2y•sqrt(x²-y²))²

= x⁴ - 4y²(x²-y²)

= x⁴ - 4x²y² + 4y⁴

= (x² - 2y²)²