计算：(-x)²x³·（-2y）³-（-2xy）²·（-3x）³y.

(-x)²x³·（-2y）³-（-2xy）²·（-3x）³y.
=x²x³×(-8y³)-4x²y²×(-27x³y)
=-8x的5次方y³+108x的5次方y³
=100x的5次方y³