Find the Discriminant x^2+7x+10=0

$x^{2} + 7 x + 10 = 0$

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 $c$ .

$7^{2} - 4 (1 \cdot 10)$

Step 3

Evaluate the result to find the discriminant.

Simplify each term.

Raise $7$ to the power of $2$ .

$49 - 4 (1 \cdot 10)$

Multiply $- 4 (1 \cdot 10)$ .

Multiply $10$ by $1$ .

$49 - 4 \cdot 10$

Multiply $- 4$ by $10$ .

$49 - 40$

Subtract $40$ from $49$ .

$9$