用分式计算 (x/2y)^2*y/2x -x/y^2 -x/y^2÷2y^2/x
1个回答
(x/2y)^2*y/2x -x/y^2 -x/y^2÷2y^2/x
=(x^2/4y^2)*y/2 -x/y^2 -x/y^2*x/2y^2
=x/8y -x/y^2 -x^2/2y^4
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