3 years ago

Write y=-3x^2+12x-21 in vertex form

2 answers:

6 0

The vertex form of any function is : f(x) = a(x-h)^2 + k
Hence the correct option would be: A): "-3(x-2)^2-9"

riadik2000 [5.3K]3 years ago

5 0

Complete the square:
y = 3x^2 - 12x + 4 
y = 3(x^2 - 4x) + 4 
y = 3(x^2 - 4x + 4 - 4) + 4 
y = 3(x^2 - 4x + 4) - 12 + 4 
y = 3(x - 2)^2 - 8

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Step-by-step explanation:

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3 0

3 years ago

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