The Quadratic Formula, Imaginary Numbers and Discriminant

The solutions of the quadratic equation
x²-5x+6=0 are

• x=1 or x=-6

• x=3 or x=2

• x=-3 or x= 2

• x=-1 or x=6

Tags

CCSS.HSA-REI.B.4B

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4

Tags

CCSS.HSA-REI.B.4B

If the discriminant is equal to 121, then the nature of the roots is?

• real, irrational and unequal

• imaginary

• real, rational and unequal

• real and equal

Tags

CCSS.HSA-REI.B.4B

Find the value of the discriminant:

3x² - 7x + 2 = 0

(a)  

Tags

CCSS.HSA-REI.B.4B

Find the value of the discriminant:

x² + 6x + 9 = 0

(a)  

Tags

CCSS.HSA-REI.B.4B

Solve the equation over the set of complex numbers by using the QUADRATIC FORMULA:

2x² + 8x + 26 = 0

For your copy and paste convenience: ± √

Type solution(s) with NO SPACES.

(a)  

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What is the nature of the roots?

3x² - 7x + 2 = 0

• 2 real, rational roots

• 2 imaginary roots

• 1 real, rational root

• 2 real, irrational roots

Tags

CCSS.HSA-REI.B.4B

Find the value of the discriminant:

7y² + 6y = -2

(a)  

Tags

CCSS.HSA-REI.B.4B

What is the nature of the roots? 7y² + 6y = -2

• 2 real, rational roots

• 2 imaginary roots

• 1 real, rational root

• 2 real, irrational roots

Tags

CCSS.HSA-REI.B.4B

What is the nature of the roots?

x² + 6x + 9 = 0

• 2 real, rational roots

• 2 imaginary roots

• 1 real, rational root

• 2 real, irrational roots

Tags

CCSS.HSA-REI.B.4B