![]() ![]() Since adding and subtracting 0 both give the same result, the "±" portion of the formula doesn't matter. If b 2 – 4 ac = 0, then you will be taking the square root of 0, which is 0.You can always find the square root of a positive, so evaluating the Quadratic Formula will result in two real solutions (one by adding the positive square root, and one by subtracting it). ![]()
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