## Algebra 1

$-\frac{7}{2}$
We start with the given expression: $\frac{c^2-ab}{2a}$ We plug in values for $a$, $b$, and $c$: $\frac{(-2)^2-(-1)(3)}{2(-1)}$ We simplify according to the order of operations: First, we simplify above the fraction bar: We simplify powers: $\frac{4-(-1)(3)}{2(-1)}$ We multiply: $\frac{4-(-3)}{2(-1)}$ We subtract: $\frac{7}{2(-1)}$ Then, we simplify beneath the fraction bar through multiplication: $-\frac{7}{2}$