Question

If f(x)=x-x^3 and h doesn't equal 0, find the following:
f(x+h)-f(x)/h

Answer 1

\[\frac{((x+h)-(x+h)^3)-x+x^3}{h}\]simplifies to\[-3x^2+3xh+h^2-1\]

Answer 2

I'm wrong it simplifies to
\[-3x^2-3xh-h^2+1\]