Answer
$-\frac{7}{2}$
Work Step by Step
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: $-\frac{7}{2}$
