SOLUTION: I need to know the y-value of f(x)=-x^2+10x+10.Thank you

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Question 766442: I need to know the y-value of f(x)=-x^2+10x+10.Thank you
Answer by josgarithmetic(39626) About Me  (Show Source):
You can put this solution on YOUR website!
This is a function having infinite number of y-values. It has a maximum y value.
If you will add and subtract %2810%2F2%29%5E2=25, you can transform into
f%28x%29=-%28x-5%29%5E2-35

The vertex is at the maximum, so all y values are LESS than or equal to (5,-35).
highlight%28f%28x%29%3C=-35%29



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Done using Completing the Square.
Do you need to see the steps?