SOLUTION: What is a quadratic equation?

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Question 173020: What is a quadratic equation?
Answer by Earlsdon(6294) About Me  (Show Source):
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A quadratic equation is one in which the highest power of the independent variable is 2 as, for example, in: y+=+2x%5E2%2B5x%2B7
The word "quadratic" comes from the latin "quadra", meaning "square", as in quadrangle, for example.