Expand and Factorise Using Difference of Two Squares

Expand and simplify:

(4x+1)(4x-1)

• 16x² - 1

• 16x² + 1

• 16x² + 8x + 1

• 16x² - 8x + 1

Factorize fully:

16x² - 49

• 4(x² - 12.25)

• x(16x - 49)

• (4x-7)(4x+7)

• (16x-7)(16x+7)

Which of the following can be factorised using the 'difference of two squares'?

• x - 9

• x² - 20

• x² + 16

• x² - 36

• 4x² - 9

25x² - 36y²

• 5x + 6y(5x - 6y)

• (5x + 6y) (5x - 6y)

• (5x + 6y)²

• (5x - 6y)²

(a)  

• A

• B

• C

• D

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

4x² - 25

• (2x + 5) (2x - 5)

• (2x - 5)²

• (2x + 5)²

• 2x + 5(2x - 5)

(a)  

• A

• B

• 
  C

• D

x² - 9

• (x + 3)²

• (x + 3) (x - 3)

• (x - 3)²

• x + 3(x - 3)

x² - 16

• (x + 4) (x - 4)

• (x + 8) (x - 2)

• (x + 4)²

• x + 4(x - 4)

64x² - 81y²

• (8x + 7y) (8x - 7y)

• (8x + 9y) (8x - 9y)

• (6x + 7y) (6x - 7y)

• (6x + 9y) (6x - 9y)