# How do you use synthetic substitution to find f(3) for f(x)=x^2 -9x+ 5?

##### 1 Answer
Aug 9, 2017

$f \left(\textcolor{g r e e n}{3}\right) = \textcolor{red}{- 13}$

#### Explanation:

(Sorry, but I had to do this as a graphic image to get the arrows in.)