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1 February, 19:39

If Lylah completes the square for f (x) = x 2 + 24x - 18 in order to find the minimum, she must write f (x) in the general form f (x) = (x - a) 2 + b. What is the value of b for f (x) ?

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  1. 1 February, 20:04
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    F (x) = (x - a) 2 + b

    Rewrite the equation as (X-a) 2 + b = f (X) (X-a) 2 + b = f (X) subtract (x-a) ^2 from both sides of the equation b=f (x) - (x-a) ^2
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