Solving Quadratic Equations, Quiz 1, Level 1

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1. Solve the equation. 3x2 + 8x + 1 = 0
x = -0.13 and x = -2.54
x = 2.54 and x = 0.13
x = 0.12 and x = -2.79
x = -0.26 and x = -5.07

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

3. Solve the equation. 3x2 + 10x + 1 = 0
x = 3.23 and x = 0.1
x = 0.1 and x = -3.43
x = -0.1 and x = -3.23
x = -0.21 and x = -6.46

4. Solve the equation. x2 + 10x + 1 = 0
x = -0.1 and x = -9.9
x = 9.9 and x = 0.1
x = 0.1 and x = -10.1
x = -0.2 and x = -19.8

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

6. Solve the equation. 3x2 + 10x + 0 = 0
x = 3.33 and x = 0
x = 0 and x = -3.33
x = 0 and x = -3.33
No real solutions

7. Solve the equation. 4x2 + 10x + 0 = 0
x = 0 and x = -2.5
x = 2.5 and x = 0
x = 0 and x = -2.5
x = 0 and x = -5

8. Solve the equation. 2x2 + 10x + 1 = 0
x = -0.1 and x = -4.9
x = -0.2 and x = -9.8
x = 4.9 and x = 0.1
x = 0.1 and x = -5.1

9. Solve the equation. 5x2 + 8x + 5 = 0
x = 0.48 and x = 2.08
x = 0.48 and x = -2.08
No real solutions
x = -0.48 and x = -2.08

10. Solve the equation. 5x2 + 7x + 5 = 0
No real solutions
x = -0.52 and x = -1.92
x = 0.52 and x = -1.92
x = 0.52 and x = 1.92

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