Urgent math

A quadratic function is given.
f(x) = x2 − 8x + 8
(a) Express the quadratic function in standard form.

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  1. f(x) = x^2-8x+8
    complete the square, by adding and subtracting 16, so things are unchanged:
    = x^2-8x+16 +8-16
    = (x-4)^2 - 8

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