Solving a Quadratic Using the Quadratic Formula

If there are no real solutions, the discriminant is

• zero

• a postive number

• a negative number

• a perfect square

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

If the discriminant is equal to -2, how many solutions are there?

• No Solutions

• 1 Solution

• 2 Solutions

• Infinite Solutions

Make a true statement about about Graph A

The discriminant is ​ (a)  

There will be ​ (b)  

• zero

• one real solution

• positive

• negative

• two complex solutions

• two real solutions

• undefined 

Make a true statement about about Graph B

The discriminant is ​​ (a)  

There will be ​ ​ (b)  

• negative

• two complex solutions

• positive

• zero

• one real solution

• two real solutions

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• -4.9 and -0.1

• -8.54 and 8.54

• -0.45 and 3.55

• -6.77 and 1.77

Use the quadratic formula to solve: n² = 9n - 20

• n = 4, -5

• n = -4, 5

• n  = -4, -5

• n  = 4, 5

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.