Question

(d) ab(x2 + y2) +xy(x: + y2) - (x: +y2)
would absolutely love some help!!!​

Answer 1

$\textbf{\huge{Answer}} \\ \\ ab( {x}^{2} + {y}^{2} ) + xy( {x}^{2} + {y}^{2} ) - ({x}^{2} + {y}^{2} ) \\ \\ = ({x}^{2} + {y}^{2} )(ab + xy - 1)$