化简(x^2+y)除以x^2+y/x*x/x^2+y
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化简(x^2+y)除以x^2+y/x*x/x^2+y化简(x^2+y)除以x^2+y/x*x/x^2+y化简(x^2+y)除以x^2+y/x*x/x^2+y(x^2+y)/[(x^2+y)/x*x/(
化简(x^2+y)除以x^2+y/x*x/x^2+y
化简(x^2+y)除以x^2+y/x*x/x^2+y
化简(x^2+y)除以x^2+y/x*x/x^2+y
(x^2+y)/[(x^2+y)/x*x/(x^2+y)] (式子是这样吗?)
=(x^2+y)/1 (看样子分母上正好互相约掉,=1了)
=x^2+y
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