Find the Discriminant f(x)=-2x^2+3x-1

$f (x) = - 2 x^{2} + 3 x - 1$

Step 1

The discriminant of a quadratic is the expression inside the radical of the quadratic formula.

$b^{2} - 4 (a c)$

Step 2

Substitute in the values of $a$ , $b$ , and $c$ .

$3^{2} - 4 (- 2 \cdot - 1)$

Step 3

Evaluate the result to find the discriminant.

Simplify each term.

Raise $3$ to the power of $2$ .

$9 - 4 (- 2 \cdot - 1)$

Multiply $- 4 (- 2 \cdot - 1)$ .

Multiply $- 2$ by $- 1$ .

$9 - 4 \cdot 2$

Multiply $- 4$ by $2$ .

$9 - 8$

Subtract $8$ from $9$ .

$1$