Solving Quadratics by Factoring

Which of the following is a difference of perfect squares?

• x² - 18
• 4x² + 36 
• 9x² - 100
• x² + 4

Tags

CCSS.HSA.APR.C.4

Solve by factoring: 2x²+ 7x + 6 = 0

• x= 3/2 , x = 2

• x = -3/2 , x = -2

• x = 6 , x = 7

• x = -6 , x = -7

Solve by factoring: x² - 9x + 20 = 0

• x = -4 , x = -5

• x = 20 , x = -9

• x = 4 , x = 5

• x = -4 , x = 5

Solve by factoring: 4x² + 11x - 3 = 0

• x = -3/4 , x = -1

• x = 4 , x = 3

• x = 1/4 , x = -3

• x = -1/4 , x = 3

Solve
16a² - 9 = 0

• a = ^-3/₄, ³/₄ 
• a = ^-4/₃, ⁴/₃ 
• a = ^-9/₁₆, ⁹/₁₆ 
• a = ^-16/₉, ¹⁶/₉ 

Tags

CCSS.8.EE.A.2

What are the solutions to this equation? (x-3)(x+2) = 0

• x = 3,-2

• x = -3,2

• x = 2,3

• x = 3,2

Solve for the values of x:

(2x - 1)(x + 4) = 0

• x = 1/2, -4

• x = 1/2, 4

• x = 2, -4

• x = -2, 4

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x
• Solve for x
• FOIL
• Set each binomial factor equal to zero

Tags

CCSS.HSA-REI.B.4B

Solve  7x²  - 28x = 0

• x = 4, x = 7
• x = 0, x  = 4
• x = 0, x = -4
• x = -4, x = -7

Tags

CCSS.HSA-REI.B.4B

Solve:
x² - 49 = 0

• x = -7, x = 7
• x = -7
• x = 7
• x = -7, x = 1

Tags

CCSS.HSA-REI.B.4B