Question

If f(x) = 3x 2 - x, find f(-2).
10
14
38

Answer 1

\[f(x)=3x^2-x\]
To find f(-2) just replace x with -2:
\[f(-2)=3(-2)^2-(-2)\]
\[f(-2)=3*4+2=12+2\]
\[f(-2)=14\]