Calculating Discriminant

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these

What is the discriminant of 6x² − 2x − 3 = 0

• 76

• 29

• 68

• none of these

Determine the value of the discriminant and name the nature of the roots for the following:
x² + 7x + 13
Remember:  b² - 4ac

• 400, 2 real root 

• 0, 1 real root with a multiplicity of 2

• -400, 2 imaginary roots

• -3, 2 imaginary roots

Solve for the discriminant of the given equation -2x² -6x=0

• -36

• 36

• 0

• 44

Find the value of the discriminant of each quadratic equation.

• 169

• 405

• 167

• 64

The ____________ is used to determine the number of solutions to a quadratic equation.

Find the discriminant: 3k² + k - 1 = 0

• 36

• 13

• -20

• -11

Find the discriminant of the following equation.

3x² -x- 2 = 0

• 5

• 25

• -24

• -26

Find the value of the discriminant. (Type # only.)

Mathematical Equivalence

ON