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Mathematics 21 Online
OpenStudy (anonymous):

What is the value of the x-coordinate of the vertex of the function shown below? F(x)=(x+4)(x-2)

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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