W know that the quadratic formula is used to find the zeroes, or x-intercepts, of a parabol on a coordinate plane. However, not all parabolas have functions that cross the x-axis! Therefore, when we solve these types of questions with the quadratic formula, we will get imaginary answers that contain the variable "i" meaning that the solutions are not truly existing on the coordinate plane.
For s full-length example on how to solve a quadratic formula problem using imaginary numbers, please click the link here:
http://www.educreations.com/lesson/view/quad-formula-imaginary/13379176/?s=EINdGl&ref=app
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