Hey!
I find the easiest way to do this, is by changing it into slop-intercept form: y = mx+b (or simply foil the problem, and plug it into your graphing calculator)...
(x+2)*(x-4) > I'm assuming that this is what that equation looks like....
x^2 + 2x - 4x - 8
x^2 - 2x - 8
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What I did at the bottom (the graph uploaded) is a graph I made for you, to help you out! Cause I know it gets confusing in math...
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How graphing works is m is the slope, b is the point (in this case the bottom point), and the x^2 tell you that is a parabola (or whatever the term is)...
