1. Solve the equation. 5x² + 10x + 4 = 0
x = -0.55 and x = -1.45
x = 1.45 and x = 0.55
x = 0.34 and x = -2.34
x = -1.11 and x = -2.89

2. Solve the equation. x² + 10x + 5 = 0
x = -0.53 and x = -9.47
x = 9.47 and x = 0.53
x = 0.48 and x = -10.48
x = -1.06 and x = -18.94

3. Solve the equation. 4x² + 16x + 5 = 0
x = 3.66 and x = 0.34
x = 0.29 and x = -4.29
x = -0.34 and x = -3.66
x = -0.68 and x = -7.32

4. Solve the equation. 2x² + 12x + 2 = 0
x = 5.83 and x = 0.17
x = -0.17 and x = -5.83
x = 0.16 and x = -6.16
x = -0.34 and x = -11.66

5. Solve the equation. 3x² + 11x + 1 = 0
x = -0.19 and x = -7.15
x = 3.57 and x = 0.09
x = -0.09 and x = -3.57
x = 0.09 and x = -3.76

6. Solve the equation. 2x² + 20x + 5 = 0
x = 9.74 and x = 0.26
x = 0.24 and x = -10.24
x = -0.26 and x = -9.74
x = -0.51 and x = -19.49

7. Solve the equation. 2x² + 9x + 5 = 0
x = -0.65 and x = -3.85
x = 3.85 and x = 0.65
x = 0.5 and x = -5
x = -1.3 and x = -7.7

8. Solve the equation. 3x² + 11x + 3 = 0
x = -0.59 and x = -6.74
x = 3.37 and x = 0.3
x = -0.3 and x = -3.37
x = 0.25 and x = -3.92

9. Solve the equation. 3x² + 15x + 3 = 0
x = 4.79 and x = 0.21
x = -0.21 and x = -4.79
x = 0.19 and x = -5.19
x = -0.42 and x = -9.58

10. Solve the equation. 3x² + 19x + 2 = 0
x = 6.23 and x = 0.11
x = -0.11 and x = -6.23
x = 0.1 and x = -6.44
x = -0.21 and x = -12.45

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Correct answers: