Selected MCQ

Current Question
If roots are imaginary, graph ____.x-axis?
  • A. Cuts
  • B. Touches
  • C. Does not intersect
  • D. Overlaps
Correct Answer: C
Explanation:
No real roots → no intersection.
Related Question 1
If roots are real and distinct, graph cuts x-axis at ____.
  • A. One point
  • B. Two points
  • C. No point
  • D. Infinite points
Correct Answer: B
Explanation:
Two real roots → two intersections.
Related Question 2
If roots are equal, quadratic graph touches x-axis at ____.
  • A. One point
  • B. Two points
  • C. No point
  • D. Infinite points
Correct Answer: A
Explanation:
A double root gives a single intersection.
Related Question 3
Sum and product of roots of Equation x² + 20x + 3 = 0 are ____.
  • A. 10, 3
  • B. -10, 3
  • C. -20, 3
  • D. -10, -3
Correct Answer: C
Explanation:
Sum = −b/a, product = c/a.
Related Question 4
The roots of Equation 3x² − 12x + 10 = 0 are ____.
  • A. Rational and unequal
  • B. Complex
  • C. Real and equal
  • D. Irrational and unequal
Correct Answer: D
Explanation:
Discriminant >0 but not a perfect square.
Related Question 5
If roots of Equation are 2 and 3, Equation is ____.
  • A. x² − 5x + 6 = 0
  • B. x² + 5x + 6 = 0
  • C. x² − 6x + 5 = 0
  • D. x² + 6x + 5 = 0
Correct Answer: A
Explanation:
Sum = 5, product = 6.