What can you conclude about the discriminant of a quadratic equation that has 2

complex roots?

Select one:
a. The discriminant is equal to 2.
b. The discriminant is equal to zero.
c. The discriminant is less than zero.
d. The discriminant is greater than zero.

Question

What can you conclude about the discriminant of a quadratic equation that has 2

complex roots?

Select one:
a. The discriminant is equal to 2.
b. The discriminant is equal to zero.
c. The discriminant is less than zero.
d. The discriminant is greater than zero.

anonymous · Answer

c. D<0

jdoe0001 · Answer

http://maths.nayland.school.nz/Year_12/AS_2.6_Algebra/Images/Poster_images/ScreenShot025.gif

accessdenied · Answer

You should understand that the discriminant:  $ b^2 - 4ac $ is in this position on the quadratic formula:
  $ x = \dfrac{ -b \pm \sqrt{\color{goldenrod}{b^2 - 4ac}}}{2a} $ 
consider how that part changes the values of x  between negative discriminant (negative square root => complex?),  zero (-b + or -  0),  and positive.