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13 January, 13:15

Find the vertex of the graph of the function.

f (x) = 2x2 - 8x + 9

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  1. 13 January, 13:29
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    (2, 1).

    Step-by-step explanation:

    f (x) = 2x^2-8x+9

    Find - b/2a first, it's - (-8) / 2 (2) = 8/4=2.

    Then find the y-coordinate of the vertex.

    2 (2) ^2-8 (2) + 9=2 (4) - 16+9=8-16+9=-8+9=1
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