Question

(a2 + b2) (a2 + b2) - (a2 - b2) (a2 - b2)​

Answer 1

Step-by-step explanation:

By using the identity,

(a+b) (a+b) =(a+b)²

And (a-b) (a-b) =(a-b)²

We get

=(a²+b²) ² - (a²-b²)

=(a⁴+2a²b²+b⁴) - (a⁴-2a²b²+b⁴)

{using identity

(a+b)²=a²+2ab+b² and (a-b) ²=a²-2ab+b²}

=a⁴+2a²b²+b⁴ -a⁴+2a²b²-b⁴

=4a²b²

Hope it helps