Practice nature of roots of quadratic equation MCQs, math (MCQ) for online test prep. Quadratic equations quiz has multiple choice questions (MCQ), nature of roots of quadratic equation quiz question and answers as if roots of x² - 5x + a = 0 are equal, then a =, answer key with choices as 25/5, ±25/4, 25/4 and none of above for competitive exam prep. Free study guide is to learn nature of roots of quadratic equation quiz online with MCQs to practice test questions with answers.

MCQ. If roots of x² - 5x + a = 0 are equal, then a =

1. 25/5
2. ±25/4
3. 25/4
4. None of Above

C

MCQ. If roots of p² + qx + 1 = 0 are equal, then

1. q² - 4p = 0
2. q² + 4p = 0
3. p² - 4p = 0
4. p² + 4q = 0

A

MCQ. Roots of quadratic equation ax² + bx + c = 0 are rational and equal if

1. b² - 4ac = 0
2. b² - 4ac > 0
3. b² - 4ac < 0
4. None of Above

A

MCQ. If roots 3² + kx + 12 = 0 are equal, then k =

1. ± 12
2. 12
3. −12
4. 0

A

MCQ. Roots of quadratic equation x² - 6x + 10 = 0 are

1. equal
2. imaginary
3. irrational
4. real

B