1. Factor: x² − 25

2. Factor: x² + 8x + 16

3. Factor completely: 3x² − 12

4. True or False: x² + 5 is factorable over the real numbers.

5. Why should you always factor out the GCF first?

Answer Key

1. (x − 5)(x + 5)

2. (x + 4)²

3. 3(x² − 4) = 3(x − 2)(x + 2)

4. False

5. To simplify and factor fully