19 multiple choice questions to test your understanding.
See answers immediately after selecting
Q1. Which is a quadratic equation?
Q2. What is the value of the discriminant of x² - 4x + 4 = 0?
Q3. If the discriminant of a quadratic equation is negative, then:
Q4. What are the roots of x² - 5x + 6 = 0?
Q5. If the sum of roots of ax² + bx + c = 0 is -3, then b/a equals:
Q6. If α and β are roots of x² - 2x - 3 = 0, then αβ =
Q7. For the quadratic equation x² + kx + 4 = 0 to have equal roots, k =
Q8. How many real roots does 2x² + 3x + 5 = 0 have?
Q9. Which method is most efficient to solve x² + 7x + 12 = 0?
Q10. A quadratic equation has roots 3 and -2. What is the equation?
Q11. What is the value of (α + β)² - 4αβ for roots of x² - 5x + 6 = 0?
Q12. If one root of 2x² + 3x + c = 0 is 1/2, then c =
Q13. The quadratic equation x² + x + 1 = 0 has:
Q14. If the roots of x² - bx + 6 = 0 are positive and add up to 5, then b =
Q15. For ax² + bx + c = 0, if a + b + c = 0, then one root is:
Q16. The roots of x² - 2√3 x + 3 = 0 are:
Q17. How many quadratic equations can have roots 2 and 3?
Q18. The sum of the roots of 3x² - 2x + 1 = 0 is:
Q19. If p and q are roots of ax² + bx + c = 0, then x² - (p+q)x + pq = 0 has roots: