Question

Find f(3) if f(x)=x^3 + 2x^2-x-1

Answer 1

Answer:

$\underline{ \boxed{f(3) = 41}}$

Step-by-step explanation:

$if \to \: f(x)=x^3 + 2x^2-x-1 \\ then \: f(3) = {3}^{3} + 2( {3)}^{2} - 3 - 1 \\ f(3) = 27 + 18 - 4 \\ f(3) = 41$