The problem is "Find f(2) if f(x) = (x + 1)2
$$\\ f(x) = (x + 1)^2 \qquad | \qquad x = \textcolor[rgb]{1,0,0}{2} \\\\
f(\textcolor[rgb]{1,0,0}{2}) = (\textcolor[rgb]{1,0,0}{2} + 1)^2\\\\
f(\textcolor[rgb]{1,0,0}{2}) = 3^2\\\\
f(\textcolor[rgb]{1,0,0}{2}) = 9$$
