Factor by GCF

What is the GCF of 28ab and 42b?

• 4b

• 6b

• 7b

• 14b

Factor Trinomial Completely: (hint: look for a GCF first) 2x² + 12x + 16

• 2(x + 8)(x + 6)

• (2x + 4)(2x + 2)

• 2(x + 2)(x + 4)

• 2(x² + 6x + 8)

Factor by using GCF: 8r³ + 16r²

• 4r²(2r + 4)

• 8r²(r + 2)

• 8(r³ + r²)

• 4(r³ + 2r²)

Factor by GCF:

6m² + 16m

• 2(3m² + 8m)

• 2m(3m + 8)

• 2m(3m - 8m)

• Prime

Factor using the GCF.

x² - 5x

• (x - 5)

• (x - 5x)

• (x - 5)

• x²(1 - 5)

• x⁴(x² - 5x - 24)
• (x - 8)(x + 3)
• x⁴(x - 8)(x + 3)
• (x³ - 8)(x³ +3)

Factor Completely:
3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)

• (x + 5)(x + 1)

• 3(x + 5)(x + 1)

• Prime

Factor Completely: 
x⁴-9x²
Hint: Factor GCF first. 

• x²(x+3)(x-3)

• (x²+3x)(x²-3x)

• (x²+9)(x-3)(x+3)

• x²(x²-9)