SOLUTION: solve by vertex form : y = x^2+6x-12 y = 4x^2-24x-11

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Question 107515: solve by vertex form :
y = x^2+6x-12
y = 4x^2-24x-11
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
solve by vertex form :
You do not "solve" by vertex form. You may "put the equation"
into vertex form. But that is not "solving" it.
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y = x^2+6x-12
x^2+6x+? = y+12+?
x^2+6x+9 = y+12+9
(x+3)^2 = y+21
Vertex: (-3,-21)
graph%28400%2C300%2C-10%2C10%2C-30%2C10%2Cx%5E2%2B6x-12%29
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y = 4x^2-24x-11
4x^2-24x = y+11
4(x^2-6x+?) = y+11+4?
4(x^2-6x+9) = y+11+36
4(x-3)^2 = y+47
(x-3)^2 = (1/4)(y+47)
Vertex: (3,-47)
graph%28400%2C300%2C-10%2C10%2C-50%2C10%2C4x%5E2-24x-11%29
Cheers,
Stan H.