Solving Quadratic Equations, Quiz 2, Level 1

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1. Solve the equation. 5x² + 6x + 1 = 0
x = 1 and x = 0.2
x = -0.2 and x = -1
x = 0.15 and x = -1.35
No real solutions

2. Solve the equation. x² + 9x + 4 = 0
No real solutions
x = -0.47 and x = -8.53
x = 0.42 and x = -9.42
x = -0.94 and x = -17.06

3. Solve the equation. 3x² + 6x + 4 = 0
No real solutions
x = -0.53 and x = -2.53
x = 0.53 and x = -2.53
x = 0.53 and x = 2.53

4. Solve the equation. x² + 7x + 4 = 0
No real solutions
x = 0.53 and x = -7.53
x = -1.26 and x = -12.74
x = -0.63 and x = -6.37

5. Solve the equation. 3x² + 7x + 1 = 0
x = -0.31 and x = -4.36
x = -0.15 and x = -2.18
No real solutions
x = 0.14 and x = -2.47

6. Solve the equation. 3x² + 7x + 2 = 0
x = 2 and x = 0.33
x = 0.26 and x = -2.59
x = -0.67 and x = -4
x = -0.33 and x = -2

7. Solve the equation. x² + 9x + 0 = 0
x = 9 and x = 0
x = 0 and x = -9
x = 0 and x = -18
x = 0 and x = -9

8. Solve the equation. 5x² + 10x + 3 = 0
x = -0.74 and x = -3.26
x = -0.37 and x = -1.63
No real solutions
x = 0.26 and x = -2.26

9. Solve the equation. 2x² + 9x + 1 = 0
x = -0.11 and x = -4.39
x = 4.39 and x = 0.11
x = 0.11 and x = -4.61
x = -0.23 and x = -8.77

10. Solve the equation. 4x² + 9x + 2 = 0
x = 2 and x = 0.25
No real solutions
x = -0.5 and x = -4
x = -0.25 and x = -2

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