What is the value of the expression $\frac {x^2-x-6}{x-3}$ for $x=2$? Express your answer in simplest form.
To evaluate this expression for $x=2$, I need to plug in $x=2$ into the numerator and denominator and simplify. I get $\frac {(2)^2-2-6}{2-3}$. Expanding the parentheses, I get $\frac {4-2-6}{-1}$. Combining like terms, I get $\frac {-4}{-1}$. Simplifying the fraction, I get $4$. 