i know it should be simple...but for some reason i can't rationalize the denomintor. can someone show me how to do this? (preferably using f(x+h) - f(x) / h)

thanks in advance

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- Sep 20th 2009, 01:31 PMpringles13derivative of (x^2+1) / (x-2)
i know it should be simple...but for some reason i can't rationalize the denomintor. can someone show me how to do this? (preferably using f(x+h) - f(x) / h)

thanks in advance - Sep 20th 2009, 01:32 PMKrizalid
no square roots, so no rationalization.

perhaps you may show what have you done? - Sep 20th 2009, 01:37 PMpringles13
- Sep 20th 2009, 01:38 PMpringles13
and instead of rationalizing the denomintor, i meant finding the common denominator. my bad

- Sep 20th 2009, 02:32 PMpringles13
i figured it out. it's:

x^2 - 4x - 1

___________

(x-2)^2