Question

Condition for two equal roots of a quadratic equation

Answer 1

Answer:

Step-by-step explanation:

It has equal root when − a 2 + a + 2 = 0 . Hint: A quadratic equation has equal roots iff its discriminant is zero. A quadratic equation has equal roots iff these roots are both equal to the root of the derivative.

Answer 2

Discriminant must be 0 in the case when two equal real roots in a quadratic equations.