If f(x)=x2−4x+7f(x) = x^2 - 4x + 7f(x)=x2−4x+7, what is the value of f(2+h)−f(2)h\frac{f(2+h) - f(2)}{h}hf(2+h)−f(2)?
h−4h - 4h−4
h+4h + 4h+4
2h−42h - 42h−4
hhh