Solve by Difference of Perfect Squares

What method corresponds to solve the equation

16a² - 9 = 0?

• UnFOIL or Short process method

• GCF method

• Square root method

• Difference of two squares method

Which of the following methods would be best to solve this equation by Factoring?
25x² - 16 = 0

• Difference of Squares

• GCF

• I-Chart (when a =1)

• Factor by Grouping

Which of the following is a difference of perfect squares?

• x² - 18

• 4x² + 36 

• 9x² - 100

• x² + 4

Which of these can factor using difference of two squares?

• 144x² - 49y²

• x² + 4x - 12

• 100x² + 20x + 1

• 14x - 16

• 10

• -10

• 1

• -1

• 0

4n² - 49

• (2x + 7)(2x - 7)

• (4n + 7)(4n -7)

• Prime

• (2n + 7)(2n - 7)

• 10

• -10

• 1

• -1

• 0

x² - 9

• (x + 3)²

• (x + 3) (x - 3)

• (x - 3)²

• x + 3(x - 3)

4x² - 25

• (2x + 5) (2x - 5)

• (2x - 5)²

• (2x + 5)²

• 2x + 5(2x - 5)

x² - 16

• (x + 4) (x - 4)

• (x + 8) (x - 2)

• (x + 4)²

• x + 4(x - 4)