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Class 10

Quadratic Equations, Course Quiz

Ten questions across the whole Quadratic Equations chapter. Pick one answer for each.

10 questions, one mark each. 6 to pass. Suggested time: 20 minutes. Your answers are not recorded.

  1. Which is a quadratic equation?
  2. Solve x2−7x+12=0x^2 - 7x + 12 = 0.
  3. Solve 6x2−x−2=06x^2 - x - 2 = 0.
  4. What is the discriminant of x2−4x−1=0x^2 - 4x - 1 = 0?
  5. The roots of x2−4x−1=0x^2 - 4x - 1 = 0 are:
  6. If D<0D < 0 for a quadratic equation, then it has:
  7. Find kk if x2+kx+25=0x^2 + kx + 25 = 0 has equal roots.
  8. The product of two consecutive positive integers is 110110. What are they?
  9. Is x=−2x = -2 a root of x2+5x+6=0x^2 + 5x + 6 = 0?
  10. A rectangle's length is 44 cm more than its width, and its area is 6060 cm². What is the width?
Unanswered questions are marked wrong.

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