The function f is given in three equivalent forms. Which form most quickly reveals the vertex?
A. f(x)=-3(x+1)(x-5)
B. f(x)=-3x^2+12x+15
C. f(x)=-3(x-2)^2+27

what is the vertex?
( , )

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

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