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January 31, 2015

January 31, 2015

Posted by **alicia** on Tuesday, February 5, 2013 at 9:07am.

- math -
**Reiny**, Tuesday, February 5, 2013 at 9:29amdo some long divsions

(x^3 - y^3)/(x-y) = x^2 + xy + y^2

(x^5-y^5).(x-y) = x^4 + yx^3 + y^2 x^2 + y^3 x +y^4

mmmhhh

(x^n - y^n)/(x-y) = x^(n-1) + y x^(n-2) + y^2 x^(n-3) + ... + y^(n-2) x + y^(n-1)

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