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x^20/[(-x^2)^3]^2-x^2 * (-x)^3/(-x^2)^2
人气:431 ℃ 时间:2020-06-06 17:06:59
解答
x^20/[(-x^2)^3]^2-x^2 * (-x)^3/(-x^2)^2
=x^20/(-x^6)^2+x^5/x^4
=x^20/x^12+x
=x^8+x
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