Here use general math mind
F(x) has more than one x inetercept .
Domain is for real numbers
Four unique numbers?
Lets see
[tex]\sf f(x)=\begin{cases}\sf (x+2)Β²,x\neq \left\{0,-1,1,2,3\right\}\\ \sf 0,x=0\\ \sf 1,x=-1\\ \sf 9,x=1\\ \sf 16,x=4\\ \sf 25,x=5\end{cases}[/tex]
For -2
For 0 it's (0,0)
And for extra ,it's discontinuous on x=0