Factoring

x ² - 4

• (x + 2)(x - 2)

• (x + 4)(x - 1)

• (x - 2)(x -2)

• (x -4)(x + 1)

Factor
x² + 9x - 36

• (x + 12)(x - 3)
• (x + 9)(x - 4)
• (x - 12)(x + 3)
• (x - 9)(x - 4)

Factor
n² + 16n + 63

• (n-7)(n+4)
• (n+7)(n-9)
• (n-3)(n-10)
• (n+7)(n+9)

Factor
k² - 2k - 24

• (k+4)(k-6)
• (k+4)(k+6)
• (k+6)(k-1)
• (k-4)(k+6)

Factor
x² - 5x - 36

• (x - 4)(x + 9)
• (x - 6)(x + 6)
• (x + 4)(x - 9)
• (x -12)(x + 3)

Factor
27x³-64

• (3x-4)(9x²+12x+16)
• (3x-4)(9x²-12x+16)
• (3x+4)(9x²-12x+16)
• (3x+4)(9x²+12x+16)

125x³ + 8

• (5x - 4)(25x² + 20x + 16)
• (5x + 2)(25x² - 10x + 4)
• (4x + 1)(16x² + 4x + 1)
• (4x - 3)(16x² + 12x + 9)

Factor:
x² - 49

• (x + 7)(x - 7)
• (x + 7)²
• (x - 7)²
• (x+7)(x-1)

4x² - 64y²

• Prime
• ( 2x - 32y) (2 x + 32y) 
• ( 2x - 8y) (2 x - 8y) 
• ( 2x - 8y) (2 x + 8y) 

What is a method of checking your work when factoring?

• FOIL
• asking the teacher every time
• assume you're correct
• division