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(1)(x-2y)^6/(2y-x)^3 (2)(-x-y)^6/(x+y)^3 (3)(x-2y)^3*(x-2y)^5/[(2y-x)^2]^3 (4)x^3n+6/x^3(n+2)

分类: 作业答案 • 2022-02-27 22:39:58
问题描述：

(1)(x-2y)^6/(2y-x)^3 (2)(-x-y)^6/(x+y)^3 (3)(x-2y)^3*(x-2y)^5/[(2y-x)^2]^3 (4)x^3n+6/x^3(n+2)

答

(1)(x-2y)^6/(2y-x)^3=-(x-2y)³(2)(-x-y)^6/(x+y)^3 =（x+y)^6/(x+y)^3=(x+y)³(3)(x-2y)^3*(x-2y)^5/[(2y-x)^2]^3 =(x-2y)^3*(x-2y)^5/(x-2y)^6=(x-2y)²(4)x^3n+6/x^3(n+2)=x^(3n+6-3n-6)=1

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