given that f(x)=(3x^2)-5, how do I find (f(x+h)-f(x))/h and (f(w)-f(x))/(w-x)?

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# given that f(x)=(3x^2)-5, how do I find (f(x+h)-f(x))/h and (f(w)-f(x))/(w-x)?

I think that my first step would be to decompose f(x) into h(x) and w(x), but I'm not sure what to do after that.

## Research, Knowledge and Information :

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