Factoring

Factor
x² + 9x - 36

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

If x² + 9x - 36 factors into (x + 12)(x - 3) then what are the zeros?

• x = -12

• x = 12

• x = 3

• x = -3

Factor
a² - a - 12

• (a - 4)(a + 3)
• (a + 6)(a - 4)
• (a - 6)(a + 4)
• (a + 4)(a - 3)

If a² - a - 12 factors into (a - 4)(a + 3) then the x-intercepts are.....

• x = 3

• x = -3

• x = 4

• x = -4

Factor completely: 
3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)
• 3(x- 5)(x - 1)

• 3(x + 5)(x + 1)
• (x + 15)(x + 3)

If 3x² + 18x +15 factors into 3(x+5)(x+1) then what are the x-intercepts?

• x = -5

• x = 5

• x = -1

• x = 1

• x= 3

x² - 25

• ( x + 5 ) ( x - 5 )

• ( x - 5 ) ( x - 5 )

• ( x + 5 ) ( x + 5 )

• Unfactorable

Fully Factor the Following
25x²-81

• (5x-9)²
• (5x+9)(5x-9)
• 25(x-9)²
• (9x+5)(9x-5)

3x² - 75

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