Quadratic Formula

Quadratic Formula

The Formula

Example 1

Solve the quadratic equation x2 - x - 12 = 0 by using the quadratic formula.

Step 1. Determine the values of a, b, and c.

For this equation a = 1, b = -1, and c = -12.

Step 2. Substitute the values of a, b, and c into the formula.

QuadFormEx1-1

Step 3. Simplify.

QuadFormEx1-2