Given f (x) = 3x3 + 8x2 - 10x - 12, find f (3). A) f (3) = 84 B) f (3) = 96 C) f (3) = 111 D) f (3) = 123

Question

Mathematics

Chanel

3 December, 23:32

Given f (x) = 3x3 + 8x2 - 10x - 12, find f (3). A) f (3) = 84 B) f (3) = 96 C) f (3) = 111 D) f (3) = 123

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Answers (1)

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Douglas Dudley · Answer 1

C) f (3) = 111

Step-by-step explanation:

f (x) = 3x^3 + 8x^2 - 10x - 12

Let x=3

f (3) = 3 (3) ^3 + 8 (3) ^2 - 10 (3) - 12

=3*27+8 (9) - 30-12

=81+72-30-12

=111