factoring

Factor
18a²b⁴c + 24ab³c²

• 6ab³c(3ab + 4c)
• 3abc(6ab³ + 8b²c)
• 6abc(3ab³ + 4c)
• 6ab3c(3b + 4c)

Factor
5ab²c¹¹ + 2bc⁵

• bc⁵(5ab²c⁶ + 2b)
• bc⁵(5abc⁶ + 2)
• b²c⁵(5bc⁶ + 2)
• c4(5a²b²c⁷ + 2bc)

10x + 50

• 10(10x+50)
• 10(x+50)
• 10(x+5)
• Cannot be factored

-6y + 36

• -6 (y -6)
• 6 (y + 6)
• -6 (1)
• cannot be factored

9x + 3

• 9 (x+1)
• 3( 3x +1)
• 3(3x + 3)
• cannot be factored

Factor the following:  $x^2-1$  

• (x+1)(x +1)

• (x - 1)(x - 1)

• prime

• (x + 1)(x - 1)

x² - 25

• ( x + 5 ) ( x - 5 ) 
• ( x - 5 ) ( x - 5 ) 
• ( x + 5 ) ( x + 5 ) 
• Prime

x² + 81

• Prime
• ( x - 9 ) ( x + 9 ) 
• ( x + 9 ) ( x + 9 ) 
• ( x - 9 ) ( x - 9 ) 

4x² - 25

• (2x + 5) (2x - 5)

• (2x - 5)²

• (2x + 5)²

• 2x + 5(2x - 5)

Factor
x² + 9x - 36

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