Question

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Evaluate f(2) using substitution: f(x)=2x^3-3x^2-18x-8

Answer 1

The value of f(2) would be -40.

Explanation:

Given function is,

`f(x) = 2x^3 - 3x^2 - 18x - 8`

Substituting x = 2 in the above function,

We get,

`f(2) = 2(2)^3 - 3(2)^2 - 18(2) - 8`

`=2(8) - 3(4) - 36 - 8`

`=16 - 12 - 44`

`\implies f(2)= -40`

Hence, the value of f(2) would be -40.