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September 21, 2014

September 21, 2014

Posted by **jazmin** on Friday, October 8, 2010 at 7:41am.

- math -
**Reiny**, Friday, October 8, 2010 at 8:19amYou must have meant

x^2/(x-y) - y^2/(x-y)

= (x^2 - y^2)/(x-y) , you had a common denominator

= (x+y)(x-y)/(x-y) , difference of squares at the top

= x + y , x ≠ y

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