Question

2^2 + 2x + x find f (x) for f(-3)

Answer 1

Given:

$f(x)=x^2+2x+x$

Simplifying it,

$f(x)=x^2+3x$

Finding value of f(-3):

$\begin{gathered} f(-3)=(-3)^2+3(-3) \\ =9-9 \\ =0 \end{gathered}$

Therefore, f(-3) = 0