Perfect Square Trinomials

Factor: x² + 24x + 144

• (x + 12)²
• (x + 9)²
• (x + 15)²
• (x + 13)²

Factor: x² - 4x + 4

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

Factor 

x² + 18x + 81                      

• (x + 9)(x – 9)
• (x + 18)²
• (x + 9)²
• (x + 6)²

16x²  -56x + 49

• (4x + 7)²
• (4x - 7)²
• (8x + 7)²
• Not a Perfect Square Trinomial

25x² + 60x + 36

• (5x + 6)²
• (5x - 6)²
• (5x + 18)²
• Not a Perfect Square Trinomial

Which of the following is/are perfect square trinomial(s)? There can be more than one answer.

• x² – 18x + 81

• x² – 12x + 6

• x² + 20x + 40

• x² – 12x – 36

• x² – 16x + 64

Which expression represents a perfect square trinomial? Choose all that apply.

x² - 20x + 100

• (x-10)²
• (x+10)²