Question

In quadratic equation of ax^2+bx+c having equal roots.Prove that ac is less than zero

Answer 1

b2 – 4ac > 0 Real and unequalb2 – 4ac = 0 Real and equalb2– 4ac < 0Unequal and Imaginaryb2 – 4ac > 0 (is a perfect square) Real, rational and unequalb2 – 4ac > 0 (is not a perfect square) Real, irrational and unequalb2 – 4ac > 0 (is aperfect square and a or b is irrational) Irrational