Quadratic Equations

Solve using the quadratic formula.

8x²-2x-18=-15

• (1/2) and (1/4)

• 0 and 3

• (3/4) and (1/2)

• -1 and 4

How many solutions does the equation x²-2x+5=0 have? (Use the discriminant b^2-4ac)

• No real roots found

• 1 root

• 2 roots

• 4 roots

Which is in the proper factored form to use the Zero Product Property ?

• x = 7 only
  

• x = 0 only
  

• x = 0 and 7
  

• There is no real answer for this equation.
  

• Suzanne made no errors.
  

• Step 2
  

• Step 3
  

• Step 4
  

• Step 5
  

• x = 5 only
  

• x = -5 only
  

• x = 5 and -5
  

• There are no real solutions
  

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

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.