Determine the axis of symmetry and the vertex of the given function. y = 2×2 − 12x + 21

Question

Determine the axis of symmetry and the vertex of the given function.
y = 2×2 − 12x + 21

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    0
    2021-09-09T18:06:38+00:00

    -b/2a = -(-12)/2*2
    12/4 or 3. X=3
    Now put 3 back into the equation for x

    2(3)^2 -12(3) +21
    18 -36 +21. = 3. Y=3

    (3,3)

    0
    2021-09-09T18:07:00+00:00

    I don’t know what x is

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