SOLUTION: How do I make this an quadratic equation: y=-5x^2+15x+18

SOLUTION: How do I make this an quadratic equation: y=-5x^2+15x+18

Algebra.Com

Question 751688: How do I make this an quadratic equation:
y=-5x^2+15x+18
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
This is a quadratic equation already

:)
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