Question

Solve: (x+y) ^2 × (x-y) ^2

Answer 1

Note: Check this attachment.

Answer 2

As we know

( a + b )² = a² + b² + 2ab

and (a -b)² = a² + b² - 2ab

(a+b)²×(a-b)² = a² + b² + 2ab × a² + b² - 2ab

( 2ab - 2ab) = 0

2a² + 2b²

2(a² + b²)