计算(-3分之1xy²)²×[xy(2x-y)+xy²]=
人气:137 ℃ 时间:2020-02-04 00:53:02
解答
(-3分之1xy²)²×[xy(2x-y)+xy²]
=1/9x²y的4次方 x(2x²y-xy²+xy²)
=1/9x²y的4次方 x2x²y
=2/9x的4次方y的5次方
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