7.5 Quiz Review

Find the factors of x² - 144. Select all that apply.

• (x + 12)(x + 12)

• (x - 24)(x + 24)

• (x + 12)(x - 12)

• (x + 24)(x - 24)

• (x - 12)(x + 12)

Find the factors of k² - 49. Select all that apply.

• (k + 13)(k - 13)

• (k + 7)(k - 7)

• (k + 5)(k - 5)

• (k - 7)(k + 7)

• (k - 13)(k + 13)

Factor 9c² - 100.

• (c - 10)(c + 10)

• (3c - 10)(3c + 10)

• (9c + 100)(9c - 100)

• (9c - 10)(9c + 10)

Factor 16r² - 196.

• (4r - 13)(4r + 13)

• (8r + 14)(8r - 14)

• (4r - 14)(4r + 14)

• (8r - 13)(8r + 13)

3x² - 75

**Factor out the GCF first if possible!

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

Which of the following is a perfect square trinomial?

• x² – 4x – 4 
• x² – 6x – 9 
• x² + 6x – 9 
• x² – 4x + 4 

Factor

x² + 18x + 81

• (x + 9)(x – 9)

• (x + 18)²

• (x + 9)²

• (x + 6)²

Factor
a² - a - 12

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

Factor
x² - 5x - 36

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

• (3x+2)(3x-2)

• (3x-2)(3x-2)

• (3x+2)(3x+2)

• (3x-2)(3x+2)