Evaluate f(2+h)−f(2)h\frac{f(2+h) - f(2)}{h}hf(2+h)−f(2) for f(x)=x2f(x) = x^2f(x)=x2.
4+h4+h4+h
2+h2+h2+h
h2h^2h2
2h+42h+42h+4