Question

Nature of roots of the quadratic equation is decided by the value of​

Answer 1

⇒As the value of b2 - 4ac determines the nature of roots (solution), b2 - 4ac is called the discriminant of the quadratic equation. Definition of discriminant: For the quadratic equation ax2 + bx + c =0, a ≠ 0; the expression b2 - 4ac is called discriminant and is, in general, denoted by the letter 'D'.