4.9 Factoring

What is the Greatest Common Factor (GCF)?

• The largest number you can make by multiplying the two given numbers.
• The largest number you can divide both given numbers by
• I don't know, I need extra help on this!
• What number they may have in common

What is the greatest common factor of 28 and 49?

• 1
• 2
• 7
• 12

What is the GCF of 18k and 15k³

• 3k²
• 3k³
• 3k
• 5k

How can you check a factoring problem?

• You can't check
• You can combine like terms
• You can distribute
• You hope you are right

Factor 4x - 20

• 4(x -5)
• 4(x + 5)
• 4x(1 - 5)
• 4x(1 + 5)

Factor by GCF:
6m² + 16m

• 2(3m² + 8m)
• 2m(3m + 8)
• 2m(3m - 8m)
• not factorable

Tags

CCSS.6.EE.A.3

CCSS.6.NS.B.4

-21x+35

• 7(-3x+5)
• 7(-21x²+35)
• 28(-3x²+5x)
• 7(3x-5)

Tags

CCSS.6.EE.A.3

Factor 30-24x²

• 6(5-4x²)
• x(5-4x)
• 6(5x-4x²)
• 6(15-12x²)

Tags

CCSS.7.EE.A.1