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计算:【(x-y)的2次幂】的3次幂乘(x-y)乘【(x-y)的3次幂】的4次幂
人气:244 ℃ 时间:2019-11-04 16:39:21
解答
[(x-y)^2]^3*(x-y)*[(x-y)^3]^4
=(x-y)^6*(x-y)(x-y)^12
=(x-y)^19
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