Discriminant Multiple Choice Questions (MCQ) PDF Download

MCQ 1: If b² - 4ac < 0, then roots of ax² + bx + c = 0 are

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

MCQ 2: If b² - 4ac = 0, then roots of ax² + bx + c = 0 are

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

MCQ 3: If b² - 4ac > 0, and not a perfect square then roots of ax² + bx + c = 0 are

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

MCQ 4: If b² - 4ac > 0, then roots of ax² + bx + c = 0 are

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

MCQ 5: Nature of the roots depends on the value of b² - 4ac is known as

1. discriminant
2. square root
3. quadratic formula
4. completing square method