Roots of Quadratic Equations Quiz (5 Questions)

1. Find roots of x² − 9 = 0

2. Find roots of x² + 6x + 9 = 0

3. What does b² − 4ac = 0 indicate?

4. True or False: A quadratic equation can have complex roots

5. Solve: x² − 4x + 5 = 0 using the quadratic formula

Answer Key

1. x = ±3

2. x = −3

3. One real root

4. True

5. x = [4 ± √(16 − 20)] / 2 → x = 2 ± i