Question 420797: State the value of the discriminant, and the describe the nature of solutions:
-4x^2-5x+4=0
A. The equation has two real solutions
B. The equation has one real solution
C. The equation has two imaginary solutions
Answer by ilana(307)   (Show Source):
You can put this solution on YOUR website! For an equation Ax^2 + Bx + C = 0, the discriminant is the value B^2 - 4AC.
If the discriminant is a positive number, there are 2 real solutions.
If the discriminant is a negative number, there are 2 imaginary solutions.
If the discriminant is 0, there is 1 real solution.
If you calculate the discriminant here (I'll leave that for you to do), you should get a positive number, so the answer is A.
|
|
|
