a. -20

b. 28

c. 24

d. -22

a. -20

b. 28

c. 24

d. -22

Tutors, please sign in to answer this question.

Hi, Maira.

The discriminant is the part of the quadratic formula that is under the radical sign, that is,
**b ^{2}-4ac**. You can use it to determine how many real solutions the equation has.

First, bring all the terms to one side of the equation:

6x^{2} - 2x + 1 = 0

a = 6

b = -2

c = 1

b^{2} - 4ac = (-2)^{2} - 4(6)(1) = 4 - 24 = -20

The discriminant is -20. (This also tells you that there are no real solutions to this equation.)

Hope this helps!

^{2} = 2x – 1

6x^{2} – 2x + 1 = 0

a = 6, b = - 2, c = 1

D = b^{2} – 4ac

* D* = (- 2)

So, the answer is (a)

Thomas D.

Aerospace Engineer tutoring in Math/Science

Great Neck, NY

5.0
(61 ratings)

Romina A.

Knowledgeable tutor in Spanish, Biology, Anatomy & Physiology and Math

Harrison, NJ

5.0
(169 ratings)

David T.

Very Experienced, Knowledgeable, and Patient Math Tutor

Dobbs Ferry, NY

5.0
(93 ratings)