need help. multiply and simplify answer, 2x(x-9y)²

[latex] 2x(x-9y)^2= 2x(x^2-18xy+81y^2)= 2x^3-36x^2y+162xy^2[/latex]

[latex] 2x(x-9y)^2= 2x(x^2-18xy+81y^2)= 2x^3-36x^2y+162xy^2[/latex]