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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no square roots, so no rationalization.
perhaps you may show what have you done?
Originally Posted by Krizalid no square roots, so no rationalization.
perhaps you may show what have you done? i've done the ((x+h)^2 +1) / (x+h) - 2) - ((x^2+1)/ (x-2)) all over h
of course the x^2 cancel out and the 1's cancel out and give you something like: ((2xh + h^2) / (x+h) - 2) - ((1)/(x-2) all over h
and instead of rationalizing the denomintor, i meant finding the common denominator. my bad
i figured it out. it's:
x^2 - 4x - 1
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