Dops Factoring

Which of the following cannot be factored using difference of squares?

• x²y² - 16

• x² - 25y

• n⁴ - 36

• 1 - x²

Factor 7x + 21 using the GCF

• 7(x+3)

• 7x + 3

• 3(x + 7)

• x(7 + 3)

• 4(3x − 5)(3x − 5)

• 4(3x + 5)(3x − 5)

• 2(9x − 25)(9x − 25)

• 2(9x + 25)(9x − 25)

Factor out the GCF, then factor using the difference of squares. 3x^3-27x

• 3x(x + 3)(x - 3)

• 3x(x² - 9)

• 3(x² - 27x)

• 3x (x² + 3)(x² - 3)

Factor by using the GCF

18x³ + 81x - 27

• 9x (2x² + 9x - 3)

• 3 (6x³ + 27x - 9)

• 9 (2x³ + 9x - 3)

• 9 (2x² + 9x - 3)

Factoring is the opposite of which property

• associative

• additive inverse

• distributive

• commutative

Factor the Following completely

4x²-16

• (2x-4)(2x+4)

• (4x-4)(4x+4)

• 4(x-2)²

• 4(x-2)(x+2)