*We will limit our introduction to equations where b^2 - 4ac >= 0*.)

Most textbooks provide a nice proof of the quadratic formula. The proof involves solving the general quadratic by completing the square. This study guide will focus on using the formula to solve problems.

**Solve using the quadratic formula**:

**Step 1**: Identify the coefficients a, b, and c.

**Step 2**: Write down the formula (you should memorize it).

**Step 3**: Substitute in the appropriate values and then evaluate.

**Solve using the quadratic formula**.

**Video Examples on YouTube**:

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