The graph of the parabola and straight line are as follows:
We can see from the graph that there are 2 solutions, since there are 2 places where the graphs intersect. They are:
(a) At left, approximately (−3.2, −13).
Using computer graphing software (like Scientific Notebook), we can zoom in and find the solution correct to as many decimal places as we like. A few zooms gives us (-3.1085, -13.3255).
(b) At right, approximately (1.5, 1). Using a computer (or graphics calculator), we can zoom in on this intersection to get a better estimate of (1.6085, 0.8255).
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