10.7 HW Check

Factor

x² + 18x + 81

• (x + 9)(x – 9)

• (x + 18)²

• (x + 9)²

• (x + 6)²

Factor: x² - 20x + 100

• (x-10)²

• (x+10)²

• (x-10)(x+10)

• (x+20)(x-20)

x² - 9

• (x + 3) (x - 3)
• (x - 3) (x - 3)
• (x + 3) (x - 6)
• Can't factor using Diff. of Squares

4a² - 25

• (2a + 5) (2a - 5)
• (2a - 5) (2a - 5)
• (x + 5) (x - 5)
• Can't factor using Diff. of Squares

q² - 121

• (q + 11) (q - 11)
• (q - 11) (q - 11)
• (q + 11) (q + 11)
• Can't factor using Diff. of Squares