Cubic special products

Which one is a difference of cubes?

• (x - 2) (x² - 2x - 4)

• (x - 2) (x² - 2x + 4)

• (x - 2) (x² + 2x - 4)

• (x - 2) (x² + 2x + 4)

Which one is a sum of cubes?

• (x + 2) (x² - 2x - 4)

• (x + 2) (x² - 2x + 4)

• (x + 2) (x² + 2x - 4)

• (x + 2) (x² + 2x + 4)

Factor the following: x³ - 27

• (x - 3) (x² - 3x - 9)

• (x - 3) (x² + 3x - 9)

• (x - 3) (x² + 3x + 9)

• (x - 3) (x² - 3x + 9)

Is (x + 3)³ an example of the sum of cubes?

• Yes

• No

What is the product of (x + 5) (x² - 5x + 25)

• x² + 125

• x² - 125

• x³ + 125

• x³ - 125

Factor:   x³ + 1

• (x + 1)³
• (x+1)(x² - x + 1)
• (x - 1) (x² + x - 1)
• (x + 1)(x² - 2x + 1)

Factor: 27x³ + 8

• (3x + 2)(9x² - 6x + 4)

• (3x + 2)(3x² -6x + 4)

• (3x²+4)(9x + 4)

• (3x + 8)(x² - 216x + 64)

Factor: 64x³ + 1

• (4x+1)(4x² -12x + 1)

• (3x - 1)(9x² + 3x + 1)

• (2x + 1)(4x² + 2x + 1)

• (4x + 1)(16x² - 4x + 1)

Factor: x³ - 64y³

• (x - 4y)(x² + 4xy + 16y²)

• (x + 4y)(x - 4y)

• (x - 4y)³

• (x-4y)(x²+4xy+4y²)

Factor: 8x³ + 1

• (2x + 1)(4x² - 2x + 1)

• (2x + 1)(2x - 1)

• (2x - 1)(4x² + 2x + 1)

• (2x+1)(2x²-4x + 1)