GCF and Dots Practice

What is the GCF of 18k and 15k³

• 3k²

• 3k³

• 3k

• 5k

What is ALWAYS the first step when factoring?

• Look for the GCF

• Fill A and C in the box

• Difference of squares

• Mulitply A times C

What is the GCF of 15, 30, and 45?

What is the GCF of 45 and 75?

• Yes, because the teacher is always right!

• No, because 9 doesn't divide into 18 and 36. There are too many variables.

Factor completely. Be sure to check for a CF first.

x² - 9

• (x + 3)²

• (x + 3) (x - 3)

• (x - 3)²

• x + 3(x - 3)

Tags

CCSS.HSA.APR.C.4

Factor completely. Be sure to check for a CF first.

4x² - 25

• (2x + 5) (2x - 5)

• (2x - 5)²

• (2x + 5)²

• 2x + 5(2x - 5)

Tags

CCSS.HSA.APR.C.4

Factor completely. Be sure to check for a CF first.

4x² - 16

• 4(2x + 4) (x - 2)

• 4(4x + 2) (x - 2)

• (2x + 4) (2x - 4)

• 4(x + 2) (x - 2)

Tags

CCSS.HSA.APR.C.4

Factor completely. Be sure to check for a CF first.

36m² - 9

• (6m + 3)(6m - 3)

• 9(4m² - 1)

• 9(2m - 1)(2m + 1)

• Not Factorable

Tags

CCSS.HSA.APR.C.4