Question

simplify 7x(x-y^2) -5y (xy+2x)-xy(x+y)


plzz answer it correct​

Answer 1

Answer...

$\tt \: 7x(x - {y}^{2} ) - 5y(xy + 2x) - xy(x + y) \\ \\ \tt = 7 {x}^{2} - 7x {y}^{2} - 5x {y}^{2} - 10xy - {x}^{2} y - x {y}^{2} \\ \\ \tt = {7x}^{2} - 7x {y}^{2} - 5x {y}^{2} - x {y}^{2} - 10xy - {x}^{2} y \\ \\ \tt = {7x}^{2} - 12x {y}^{2} - x {y}^{2} - 10xy - {x}^{2} y \\ \\ \tt = 7 {x}^{2} - {13xy}^{2} - 10xy - {x}^{2} y$