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化简并求值:4x³(-y³)²-3x·(-x)²(-y²)³,其中x=-2,y=1.
今晚就要@!
人气:432 ℃ 时间:2020-05-25 07:15:47
解答
原式=4x³y^6-3x·x²(-y^6
=4x³y^6+3x³y^6
=7x³y^6
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