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OpenStudy (anonymous):
What is the value of the x-coordinate of the vertex of the function shown below? F(x)=(x+4)(x-2)
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OpenStudy (anonymous):
your idea?
OpenStudy (anonymous):
Hint: the midpoint between -4 and 2
OpenStudy (anonymous):
isn't x+4=0 x=-4 x-2=0 x=2
OpenStudy (anonymous):
at those points, the parabola "cut" the x-intercept. like this |dw:1407467797873:dw|
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