SOLUTION: How do you turn the equation h=-5t^2+20t+105 into vertex form? Thank you

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Question 823135: How do you turn the equation h=-5t^2+20t+105 into vertex form? Thank you
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Finding vertex form of:

h = -5t^2+20t+105      |Completing the Square

h = -5(t^2 - 4t)   + 105     |Note:   t^2 -4t + 4 = (t-2)^2 

h= -5(t-2)^2 + 20 + 105

h=  -5(t-2)^2 + 125   V(2,125)