Solving Quadratic Equations, Quiz 2, Level 3

Solving Quadratic Equations, Quiz 2, Level 3

Click on the correct answer choice. (Where appropriate, answers are to the nearest hundredth.) When you have completed the quiz, press the "Get Score" button.

1. Solve the equation. 0*x2 + 18x + 2 = 0
x = -0.11 and x = -17.89
x = -0.22
x = -0.11 and x = 17.89
x = 0.11 and x = 17.89

2. Solve the equation. x2 + 2x + 0 = 0
x = 2 and x = 0
x = 0 and x = -2
x = 0 and x = -2
x = 0 and x = -4

3. Solve the equation. x2 + 0*x + (-3) = 0
x = 1.73 and x = -1.73
x = 1.73 and x = -1.73
x = -1.73 and x = -1.73
x = 3.46 and x = -3.46

4. Solve the equation. x2 + (-15x) + 0 = 0
x = 0 and x = -15
x = 15 and x = 0
x = 30 and x = 0
x = 15 and x = 0

5. Solve the equation. -3x2 + 8x + 4 = 0
No real solutions
x = -0.43 and x = 3.1
x = -3.1 and x = 0.43
x = 0.67 and x = 2

6. Solve the equation. -5x2 + 3x + (-5) = 0
x = -0.74 and x = -1.34
No real solutions
x = -0.74 and x = 1.34
x = 0.74 and x = 1.34

7. Solve the equation. 4x2 + 6x + (-2) = 0
No real solutions
x = -0.5 and x = -1
x = 0.28 and x = -1.78
x = 0.56 and x = -3.56

8. Solve the equation. -5x2 + x + (-3) = 0
x = 0.68 and x = 0.88
No real solutions
x = -0.68 and x = -0.88
x = -0.68 and x = 0.88

9. Solve the equation. 3x2 + (-x) + (-5) = 0
x = 1.47 and x = -1.14
x = 1.14 and x = -1.47
x = -1.14 and x = -1.47
x = 2.94 and x = -2.27

10. Solve the equation. -4x2 + (-8x) + (-1) = 0
x = 0.13 and x = 1.87
x = -2.12 and x = 0.12
x = -3.73 and x = -0.27
x = -1.87 and x = -0.13

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