The roots of a quadratic equation ax² + bx + c = 0 will be real and unequal, if -

Question: The roots of a quadratic equation ax² + bx + c = 0 will be irrational and unequal, if -

Solution:
The roots of a quadratic equation ax² + bx + c = 0 will be real and unequal, if b² - 4ac > 0.
The roots of a quadratic equation ax² + bx + c = 0 will be real and equal, if b² - 4ac = 0.
The roots of a quadratic equation ax² + bx + c = 0 will be irrational and unequal, if b² - 4ac < 0.