In the quadratic equation ax^2 + bx + c = 0, if b^2 - 4ac = 0, which of the following is true of the equation?

A. It has two complex solutions.
B. It has one real solution.
C. It has two real solutions.

Question

In the quadratic equation ax^2 + bx + c = 0, if b^2 - 4ac = 0, which of the following is true of the equation?

 		A.	It has two complex solutions.
 		B.	It has one real solution.
 		C.	It has two real solutions.

erak · Answer

Basically b^2 - 4ac is called the discriminant. It's part of the quadratic formula. When it = 0 that means there's only one solution

hippoharry · Answer

so the answer is B?

erak · Answer

yeah

erak · Answer

For future reference when it equals a positive number, it has 2 real solutions.

When it equals a negative number, it has two complex solutions.