Quadratic Formula

The Formula

Example 2

Solve the quadratic equation 2x2 + 3x + 12 = 0 by using the quadratic formula.

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

For this equation a = 2, b = 3, and c = 12.

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

QuadFormEx2-1

Step 3. Simplify.

QuadFormEx2-2