Solve -3xy(x^2 - 7xy - 9y^2)

Evaluate

- 3 x y (x^{2} - 7 x y - 9 y^{2})

Apply the distributive property

- 3 x y x^{2} - (- 3 x y \times 7 x y) - (- 3 x y \times 9 y^{2})

Multiply the terms

More Steps

- 3 x^{3} y - (- 3 x y \times 7 x y) - (- 3 x y \times 9 y^{2})

Multiply the terms

More Steps

- 3 x^{3} y - (- 21 x^{2} y^{2}) - (- 3 x y \times 9 y^{2})

Multiply the terms

More Steps

- 3 x^{3} y - (- 21 x^{2} y^{2}) - (- 27 x y^{3})

Solution

- 3 x^{3} y + 21 x^{2} y^{2} + 27 x y^{3}

Simplify the expression