Unit 5 Cum Review: Solving Quadratic Equations

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.

Solve by completing the square...

x² + 4x + 1 = 0

• x = -2 ± √3

• x = -3 ± √2

• x = 2 ± √3

• x = 2 ± √2

Solve by ANY method you have learned: x² − 2x + 11 = 0

• 1±i√10

• 1±√10

• -1±i√10

• -1±√10

• x = 7 only
  

• x = 0 only
  

• x = 0 and 7
  

• There is no real answer for this equation.
  

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

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Solve by taking square roots: -5x² = 50

• ± 5

• ± 5i

• ± √10

• ±i√10

Solve by taking square roots: (x - 2) ² = 49

• 9 or -5

• ± 9

• ± 5

• ± 7

Which is the standard form for a quadratic equation?

Identify the values of A, B, and C

10p² + 7p - 20 = 0

• A=1, B=7, C=-20

• A=10, B=7, C=20

• A=10, B=-7, C=-20

• A=10, B=7, C=-20