Question

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

Answer 1

Answer:

$7x {}^{2} - 13xy {}^{2} - x {}^{2}y - 10xy$

Step-by-step explanation:

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

Answer 2

Answer:

Step-by-step explanation: