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26 December, 07:11

What is the vertex of the function f (x) = x^2 + 16x?

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  1. 26 December, 07:14
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    f (x) = x^2 + 16x

    Completing the square.

    f (x) = a (x-h) ^2 + k

    f (x) = (x + 8) ^2 - 64

    h = - 8, k = - 64

    Vertex = (h, k)

    Vertex = (-8, - 64)

    Not fully explained, just a quick summary.
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