What is a2-b2 equal to?
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Sure... a good example of that is when you have non-linear expressions in the system, like say for example a linear and a quadratic, like y = 4x and y = x².
recall that for a system of equations, where the graph of both equations intersect, is the solutions, check the picture below.
recall that for a system of equations, where the graph of both equations intersect, is the solutions, check the picture below.