Factoring (GCF, DOTS, and a=1)

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

What is the GCF of 20 and 30?

• 5
• 2
• 10
• 20

What is the GCF of 18k and 15k³

• 3k²
• 3k³
• 3k
• 5k

Factor 10+20n

• 10(1+2n)
• n(1+2n)
• 10(5+10n)
• 10n(1+n)

Tags

CCSS.7.EE.A.1

-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

Factor:
56a³-8a

• 8a²(56a³-8a)
• 8a(7a²-1)
• 8a(7a³-a)
• 8a²(35a²-a)

Tags

CCSS.HSA.APR.C.4

Factor using GCF or monomial factoring:

2n²-8n³

• 2n²(n-4n²)

• 2n²(1-4n)

• 2n³(10-8n²)

• 3n(1-4n)

Factor out the GCF:
10x³ - 15x

• x(10x² - 15)
• 5x(2x² - 3)
• 5(2x³ - 3x)
• 5x²(10x - 3)

Factor
r² -16r + 60

• (r - 15)(r + 4)
• (r - 6)(r + 10)
• (r - 6)(r - 10)
• (r +30)(r - 2)

Tags

CCSS.HSA-REI.B.4B