Question

(a+b)(a-b)(a^2+b^2) from identities

Answer 1

$\huge\red{Answer\: is}$
$(a + b)(a - b)(a {}^{2} + b {}^{2} ) \\ = (a {}^{2} - b {}^{2} )(a {}^{2} + b {}^{2} ) \\ = (a {}^{4} - b {}^{4} )$
Hope it helps you