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(-1/2xy²)³-1/6x(xy³)² ,急,
人气:327 ℃ 时间:2020-04-02 04:55:22
解答
(-1/2xy²)³-1/6x(xy³)²
=-1/8x^3y^6-1/6x^3y^6
=-7/24x^3y^6
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