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Express in simplest terms: `(x^2-2xy+y^2+x-y)/(x^2-y^2)`

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spock14 | Student, Undergraduate | (Level 1) eNoter

Posted May 26, 2012 at 7:56 PM via web

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Express in simplest terms: `(x^2-2xy+y^2+x-y)/(x^2-y^2)`

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted May 26, 2012 at 8:01 PM (Answer #1)

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The expression `(x^2-2xy+y^2+x-y)/(x^2-y^2)` has to be simplified.

`(x^2-2xy+y^2+x-y)/(x^2-y^2)`

=> `((x - y)^2 - (x - y))/((x - y)(x + y))`

=> `((x - y)(x - y - 1))/((x - y)(x + y))`

=> `(x - y - 1)/(x + y)`

The expression `(x^2-2xy+y^2+x-y)/(x^2-y^2) = (x - y - 1)/(x + y)`

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