SOLUTION: How do you determine if an equation in a quadratic equation?

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Question 1767: How do you determine if an equation in a quadratic equation?
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
this is very simple...any equation where the largest appearing power is "squared" is a quadratic.
so %28x%5E3%29+%2B+%28x%5E2%29+=+9 is not a quadratic, since we have a cubic power.
Hope this helps
Jon