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Mathematics 17 Online
OpenStudy (anonymous):

the roots of a quadratic function are x=-2+sqrert {7}. find the x-value of the vertex of the corresponding parabola.

OpenStudy (amistre64):

the vertex tends to be in the middle of your intercepts

OpenStudy (amistre64):

the middle of: a+b and a-b is just "a"

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