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OpenStudy (brittany):
what is the x coordinate of the vertex of this parabola? y=-3x^2+12x-5 -3, 2 , 12
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OpenStudy (anonymous):
the vertex of the parbola, can be given by this formula: (-b)/(2a), in this case b=12 and a=-3
OpenStudy (anonymous):
once you plug then in you should get the x coordinate as being : 2
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