Графики, парабола и другие

$$f\left(x\right)=\left(x-4\right)\left(x+1\right)$$

$$f\left(x\right)=\left(x+4\right)\left(x-1\right)$$

$$f\left(x\right)=\left(x+4\right)\left(x+1\right)$$

$$f\left(x\right)\ =\left(x-2\right)\left(x+1\right)$$

$$f\left(x\right)=\left(x+2\right)\left(x-1\right)$$

$$f\left(x\right)=\left(x-2\right)\left(x-1\right)$$

$$f\left(x\right)=\left(x-2\right)^2+1$$

$$f\left(x\right)=\left(x+2\right)^2-1$$

$$f\left(x\right)=\left(x-2\right)^2-1$$

$$f\left(x\right)\ =\ \left(x+3\right)^2-2$$

$$f\left(x\right)=\left(x-3\right)^2-2$$

$$f\left(x\right)=\left(x-3\right)^2+2$$