Question

(f) (a2+ b2) (-a2+ b2)

Answer 1

Answer:

$( {b2})^{2}- ( {a2})^{2}$

Answer 2

Answer:

(a² + b²)(-a² + b²)

= (b² + a²)(b² - a²)

= (b² - a²)²

[since (a - b )² = (a + b)(a - b)

hope it helps you!!