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(x^-2×y^3)^-3要过程,答案是x^6/y^9,
人气:469 ℃ 时间:2020-02-05 19:09:09
解答
(x^-2×y^3)^-3
=1/(x^-2×y^3)^3
=1/(y^3/x^2)^3
=1/(y^9/x^6)
=x^6/y^9
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