$f (x) = 9 x^{3} + 6 x^{2} + 3 x + 1$ find the value if $x = 3$

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Solution

$f (x) = 9 x^{3} + 6 x^{2} + 3 x + 1 f (3) = 9 (3)^{3} + 6 (3)^{2} + 3 (3) + 1 f (3) = 243 + 54 + 9 + 1 f (3) = 307$

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