Quadratic Formula

In the equation x² +5x +7 = 0, match each leading coefficient with its correct letter.

• a=0, b=5, c=7

• a=1, b=5, c=7

• a=7, b=5, c=1

The discriminant is

• aX² + bX + c

• b - 4ac

• b² - 4ac

• b² + 4ac

How many x-intercepts does it have?

• 0

• 1

• 2

• 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 root 

• 0, 1 real root with a multiplicity of 2

• -400, 2 imaginary roots

• -3, 2 imaginary roots

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1

Fill in the formula x^2-6x-40=0 ​ BLUE=​ (a)   RED= ​ (b)   GREEN= ​ (c)  

• -6

• 1

• -40

• -1

• 6

• 40

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

Fill in the formula =​ = ​ = ​

• -6

• 1

• -40

• -1

• 6

• 40

Fill in the formula x^2-6x-40=0 ​ BLUE=​ (a)   RED= ​ (b)   GREEN= ​ (c)  

• -6

• 1

• -40

• -1

• 6

• 40