Question

multiply:(x2+xy)(x2-xy)

Answer 1

Using identity (a+b)(a-b) = a^2 - b^2
$( {x}^{2} + xy)( {x}^{2} - xy) \\ \\ = ( { {x}^{2} )}^{2} - {(xy)}^{2} \\ \\ = {x}^{4} - {x}^{2} {y}^{2}$

Answer 2

four x square minusxsquare y square