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数学
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(-½xy²)³—1/6x(xy³)²
人气:174 ℃ 时间:2020-05-28 01:26:46
解答
(-½xy²)³—1/6x(xy³)²
= -1/8 x³y^6-1/6x³y^6
= -7/24x³y^6
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