SOLUTION: express the function f(x) = -5x^2 +20x +2 in vertex form

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Question 256369: express the function f(x) = -5x^2 +20x +2 in vertex form
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29+=+-5x%5E2+%2B20x+%2B2
Complete the square.
f%28x%29+=+-5%28x%5E2+-4x%29+%2B2
f%28x%29+=+-5%28x%5E2+-4x%2B4%29+%2B2%2B20
f%28x%29+=+-5%28x-2%29%5E2+%2B22
+graph%28+300%2C+300%2C+-5%2C+5%2C+-25%2C+25%2C+-5x%5E2+%2B20x+%2B2%29+