Factoring Practice

What are the factors of
25x² - 81?

• (5x - 9)(5x + 9)
• (5x - 9)(5x - 9)
• (5x + 9)(5x + 9)
• Cannot be factored

Factor completely.
k² -2k - 24

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

Factor completely:
 3x² + 5x - 12

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

Factor completely: 2x²+22x+60

• (2x+10)(x+6)
• (x+5)(x+6)
• 2(x+1)(x+30)
• 2(x+5)(x+6)

Factor completely: x²-6x+8

• (x-2)(x-4)
• (x-1)(x-8)
• (x+2)(x+4)
• (x+1)(x+8)

Factor completely: 3x²-8x+4

• (3x-4)(x-1)
• (3x-2)(x-2)
• (x+1)(3x+4)
• (x+2)(3x+2)

Factor:
x² - 9

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

 $36x^2-1$  

•  $36(x^2-1)$  

•  $(6x+1)(6x-1)$  

•  $6x(6x-1)$  

•  $(6x-1)(6x-1)$  

 $4x^2-1$  

•  $(2x+1)(2x-1)$  

•  $(4x+1)(4x-1)$  

•  $1(4x^2-1)$  

•  $2x(2x-1)$  

x³ - 64

• (x - 4)(x² + 4x + 16)
• (x - 3)(x² + 3x + 9)
• (x - 5)(x² + 5x + 25)
• (x + 4)(x² - 4x + 16)