Question

If f(x) = x³ + x, find ula1" title="\frac{f(x+h)-f(x)}{h}, f\neq 0" alt="\frac{f(x+h)-f(x)}{h}, f\neq 0" align="absmiddle" class="latex-formula">.

Answer 1

I think you are doing limits so this is what I did
and that's how I factored using the box method because it's easier to track distribution.