Factoring Special Cases Solve Quadratic

Which of the following trinomials is a perfect square trinomial?

• r² - 6r + 36

• 4y² + 10y + 25

• x² + 16x + 16

• 9a² - 12a + 4

What is ALWAYS the first step when factoring?

• Look for the GCF

• Write a, b, and c

• Difference of squares

• Group

Factor:
x² - 30x + 225

• (x + 15)²

• (x - 15)²

• (x + 25)²

• (x - 25)²

Factor: 
x² - 225

• ( x + 15) ( x + 15) 

• Prime

• ( x - 15) ( x + 15) 

• ( x - 15) ( x - 15) 

Factor: 
x² - 400

• ( x - 200) ( x + 200) 

• ( x + 20) ( x + 20) 

• Prime

• ( x - 20) ( x + 20) 

Factor: 
x² - 169

• ( x - 13) ( x + 13) 

• ( x + 13) ( x + 13) 

• ( x - 13) ( x -13) 

• Prime

Factor, if possible: 4x²+36x+81

• (4x+81)²

• (2x+9)²

• Prime /
  Not factorable. 

• (2x-9)²

Factor, if possible: 
64x²-16x+1

• Not factorable.

• (32x-1)²

• (8x+1)²

• (8x-1)²

• A

• B

• C

• D

• A

• B

• C

• D