(-1/2x²y)³(-3xy²)²
=(-1/8x的6次方y³)(9x²y的4次方)
=(-1/8×9)x的(6+2)次方y的(3+4)次方
=-9/8x的8次方y的7次方
(-x)²*x³(-2y)³+(2xy)²(-x)³y
=x²*x³*(-8y³)+(4x²y²)(-x³)y
=-8x的5次方y³-4x的5次方y³
=-12x的5次方y³
(-1/2x²y)³(-3xy²)²
=(-1/8x的6次方y³)(9x²y的4次方)
=(-1/8×9)x的(6+2)次方y的(3+4)次方
=-9/8x的8次方y的7次方
(-x)²*x³(-2y)³+(2xy)²(-x)³y
=x²*x³*(-8y³)+(4x²y²)(-x³)y
=-8x的5次方y³-4x的5次方y³
=-12x的5次方y³