Question

PRIOR KNOWLEDGE If f (x)=x^2-x I, what is f(-3)? A 12 b -6 c6 d12

Answer 1

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

to find f(-3) you just replace x=-3 on the equation

$\begin{gathered} f(-3)=(-3)^2-(-3) \\ f(-3)=9+3 \\ f(-3)=12 \end{gathered}$

so, the option is D