计算:(-x)²x³·(-2y)³-(-2xy)²·(-3x)³y.
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计算:(-x)²x³·(-2y)³-(-2xy)²·(-3x)³y.
计算:(-x)²x³·(-2y)³-(-2xy)²·(-3x)³y.
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
(-x)²x³·(-2y)³-(-2xy)²·(-3x)³y
=-8x^5y³-4x²y²·﹙﹣27x³﹚y
=-8x^5y³+108x^5y³
=100x^5y³
计算:(-x)²x³·(-2y)³-(-2xy)²·(-3x)³y
原式=-8x⁵y³-(4x²y²)(-27x³y)=-8x⁵y³+108x⁵y³=100x⁵y³.