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6 March, 11:16

Show all your work to find the axis of symmetry of f (x) = - 2 (x - 4) ^2 + 2.

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  1. 6 March, 15:00
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    -2 (x^2+15)

    Step-by-step explanation:

    f (x) = - 2 (x - 4) ^2 + 2.

    Expanding (x-4) ^2

    (x-4) (x+4)

    x (x+4) - 4 (x+4)

    x^2+4x-4x-16

    x^2-16

    F (x) = - 2 (x^2-16) + 2

    -2x^2-32+2

    -2x^2-30

    -2 (x^2+15)
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