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Factor of a Polynomial

Find f9 if ...

Question

Find $f (9)$ if $f (x) = x^{2} - 6 x + 5$

32

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Solution

The correct option is A $32$
$f (x) = x^{2} - 6 x + 5 f (9) = 9^{2} - 6 (9) + 5 f (9) = 81 - 54 + 5 = 32$

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