> What is the simplest form of y/y^2-x^2 minus x/y^2-x^2?

What is the simplest form of y/y^2-x^2 minus x/y^2-x^2?

What is the simplest form of y/y^2-x^2 minus x/y^2-x^2?

Posted at： 2014-06-09　
y / (y2 - x2) - x / (y2 - x2) (y - x) / (y2 - x2) (y - x) / (x + y)(y - x) 1 / (x + y)
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