Discriminant

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

For the function below, is the discriminant positive, negative, or zero?

___________

y = x² + 4x + 4

• Positive

• Negative

• Zero

• Not Sure

Tags

CCSS.HSA-REI.B.4B

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

• 76

• -7

• 9

• none of these

Tags

CCSS.HSA-REI.B.4B

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

• 76

• 29

• 68

• none of these

Tags

CCSS.HSA-REI.B.4B

If the discriminant is positive, then the solution will be

• one real solution

• two real solutions

• no real solutions

• one non-real solution

Tags

CCSS.HSA-REI.B.4B

A function has a discriminant of 25.
______________
How many solutions does it have?

• 0
• 1
• 2
• 5

Tags

CCSS.HSA-REI.B.4B

Determine the values of

a, b, and c for

the quadratic equation:

4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

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 roots 

• 0; 1 real root

• -400; 2 non-real roots

• -3; 2 non-real roots

Tags

CCSS.HSA-REI.B.4B

Determine the value of the discriminant and name the nature of the solution for the following:
x² + 8x - 84
Remember:  b² - 4ac

• 256; 2 reals - Rational

• 400; 2 reals - Rational

• √(-400); 2 non-real

• 20; 2 reals - Rational

Tags

CCSS.HSA-REI.B.4B

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

• 400; 2 reals

• 0; 1 real

• √(-400) ; 2 non-real

• -3; 2 non-real

Tags

CCSS.HSA-REI.B.4B