Finite Math Examples

$x^{2} + 2 x - 3 = 0$

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

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

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

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

Evaluate the result to find the discriminant.

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Simplify each term.

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

$4 - 4 (1 \cdot - 3)$

Multiply $- 3$ by $1$ .

$4 - 4 \cdot - 3$

Multiply $- 4$ by $- 3$ .

$4 + 12$

Add $4$ and $12$ .

$16$

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