Search

Solving Using the Quadratic Formula Worksheet

Solve each equation using the quadratic equation.

Checking Your Answers

Click "Show Answer" underneath the problem to see the answer. Or click the "Show Answers" button at the bottom of the page to see all the answers at once.

Example:

Equation: x^2 + x - 3.75 = 0 
Answer: x = -2.5, 1.5

Quiz:

  1. Equation: x^2 - 7x + 10 = 0 
    Answer: x = 2, 5
  2. Equation: x^2 - 14x + 45 = 0 
    Answer: x = 5, 9
  3. Equation: 0.25x^2 - 0.25x - 10.5 = 0 
    Answer: x = -6, 7
  4. Equation: 0.3y^2 + 0.15y - 11.7 = 0 
    Answer: y = -6.5, 6
  5. Equation: 10k^2 + 200k + 937.5 = 0 
    Answer: k = -12.5, -7.5
  6. Equation: x^2 - 11x + 30.25 
    Answer: x = 5.5
  7. Equation: 4x^2 + 8x - 77 = 0 
    Answer: x = -5.5, 3.5
  8. Equation: 16y^2 - 8y - 3 = 0 
    Answer: y = -0.25, 0.75
  9. Equation: x^2 - 1.375x + 0.375 = 0 
    Answer: x = 1, 0.375
  10. Equation: z^2 + 0.6z - 20.16 = 0 
    Answer: z = -4.8, 4.2
  11. Equation: x^2 = 15 + 2x 
    Answer: x = -3, 5
  12. Equation: k^2 - 10k + 35 = 7k - 35 
    Answer: k = 7, 10
  13. Equation: 2x^2 + 5 + 20x = 20 - 8x^2 + x 
    Answer: x = -2.5, 0.6
  14. Equation: 3 = 16p - 20p^2 
    Answer: p = 0.3, 0.5
  15. Equation: 8y = 0.5y^2 + 31.5 
    Answer: y = 7, 9
  16. Equation: 2m + m^2 + 2.5m - 2.5 = 0 
    Answer: m = -5, 0.5
  17. Equation: n^2 + 7n + n^2 - 10 = 5 
    Answer: n = -5, 1.5
  18. Equation: x^2 = 7.84 
    Answer: x = -2.8, 2.8
  19. Equation: x^2 - 3x = 0 
    Answer: x = 0, 3
  20. Equation: q^2 - 7.5q + 25 = -q^2 - 7.5q 
    Answer: q = 2.5, 5
  21. Show all answers

Related Pages

Solve by Using the Quadratic Equation Lesson
Brush up on your knowledge of the techniques needed to solve problems on this page.

Tutoring

Looking for someone to help you with algebra? At Wyzant, connect with algebra tutors and math tutors nearby. Prefer to meet online? Find online algebra tutors or online math tutors in a couple of clicks.

Sign up for free to access more Algebra resources like . Wyzant Resources features blogs, videos, lessons, and more about Algebra and over 250 other subjects. Stop struggling and start learning today with thousands of free resources!
if (isMyPost) { }