We can find the function values at some points. For example, at $x=0$, $f(x) = 2$, at $x=2$, $f(x) = 0$, and at $x=-2$, $f(x) = 0$. Since this function is a parabola, we can plot these points and draw a curve through them. We will use a solid dot at $x=2$ because
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