Diketahui f(x)=x2+4xf\left(x\right)=x^2+4xf(x)=x2+4x , f(a+h)−f(a)h\frac{f\left(a+h\right)-f\left(a\right)}{h}hf(a+h)−f(a) adalah ....
2a+h+42a+h+42a+h+4
2a+h+22a+h+22a+h+2
a+h+4a+h+4a+h+4
2a+h+4+2a2h2a+h+4+\frac{2a^2}{h}2a+h+4+h2a2
2a+h+4h2a+h+\frac{4}{h}2a+h+h4