Solving Quadratic Equations, Quiz 3, Level 3

Solving Quadratic Equations, Quiz 3, 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. x2 + (-13x) + (-3) = 0
x = 13.23 and x = -0.23
x = 0.23 and x = -13.23
x = 12.76 and x = 0.24
x = 26.45 and x = -0.45

2. Solve the equation. 3x2 + 2x + (-3) = 0
x = 1.39 and x = -0.72
x = -1.39 and x = -0.72
x = 0.72 and x = -1.39
x = 1.44 and x = -2.77

3. Solve the equation. -4x2 + (-11x) + 4 = 0
x = -0.33 and x = 3.08
x = -2.32 and x = -0.43
x = -3.08 and x = 0.33
x = -6.15 and x = 0.65

4. Solve the equation. x2 + 18x + (-1) = 0
x = 0.06 and x = -18.06
x = 18.06 and x = -0.06
x = -0.06 and x = -17.94
x = 0.11 and x = -36.11

5. Solve the equation. 2x2 + (-2x) + 1 = 0
x = -1.37 and x = -0.37
x = 1.37 and x = 0.37
x = 1.37 and x = -0.37
No real solutions

6. Solve the equation. 2x2 + 12x + (-3) = 0
x = 6.24 and x = -0.24
x = -0.26 and x = -5.74
x = 0.24 and x = -6.24
x = 0.48 and x = -12.48

7. Solve the equation. x2 + (-3x) + (-1) = 0
x = 3.3 and x = -0.3
x = 0.3 and x = -3.3
x = 2.62 and x = 0.38
x = 6.61 and x = -0.61

8. Solve the equation. x2 + 3x + 2 = 0
x = -2 and x = -4
x = 2 and x = 1
x = 0.56 and x = -3.56
x = -1 and x = -2

9. Solve the equation. -x2 + 13x + (-3) = 0
x = -12.76 and x = -0.24
No real solutions
x = 0.47 and x = 25.53
x = 0.24 and x = 12.76

10. Solve the equation. -x2 + (-18x) + 1 = 0
x = -0.06 and x = 18.06
x = -17.94 and x = -0.06
x = -18.06 and x = 0.06
x = -36.11 and x = 0.11

Score =
Correct answers: