化简:-x(2)-(2xy) *9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢!

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化简:-x(2)-(2xy)*9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢!化简:-x(2)-(2xy)*9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢!化简:-x(

化简:-x(2)-(2xy) *9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢!
化简:-x(2)-(2xy) *9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢!

化简:-x(2)-(2xy) *9x(2)-9xy(3)+12x(4)y(2)/(3xy)谢谢!
原式=-x²-18x³y-9xy³+4x³y
=-x²-14x³y-9xy³