MATH !!

Given that
f:x -->3-x
g:x --> x+2/x-5

derive the expression for gf(x)

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  1. g(f(x))=(3-x)+2/(3-x)-5 now combine terms.

  2. how to combine ?? that's wat i have problem withh ??

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  3. Get a common denominator, and combine. If you don't know how to do that, http://regentsprep.org/Regents/math/ALGEBRA/AV5/addsubt.htm

  4. still don't understand how to combine this . can u show me ?

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