Factoring Polynomials: Grouping and Formulas

What is the GCF of 18k and 15k³

• 3k²
• 3k³
• 3k
• 5k

Factor by grouping
x³ - 4x² -4x + 16

• (x+4)(x+2)
• (x-4)(x² -4) 
• (x+4)(x² -4)
• (x-4)(x-2)

Solve a³-9a²+14a=0.

• -7, -2
• 7, 2
• 0, -7, -2
• 0, 7, 2

Factor by grouping:
5n³-10n²+3n-6

• (5n²+3)(n-2)
• (5n²-3)(n-2)
• (5n³+3)(n-2)
• 10n(n²-6)

Factor by grouping:
4p³+8p²+3p+6

• (2p²+3)(p+2)
• (2p²+6)(p+4)
• (4p²+3)(p+2)
• (4p²+8p)(3p+6)

2x³-8x²-x+4

• (2x²-1)(x-4)
• 2(x²-1)(x+4)
• (x²-1)(2x-4)
• (2x²+1)(x-4)

Write 4x³ +2x²-6x in factored form.

• 2x(2x-3)(x+1)

• 4x(2x+3)(x-1)

• 2x(2x+3)(x-1)

• 4x(2x-3)(x+1)

Find the factors of k² - 49.

• (k + 7)(k +7)

• (k + 8)(k - 8)

• (k - 7)(k + 7)

• (k - 7)(k -7)

9x² - 1

• (9x + 1) (9x -1)

• (3x + 1) (3x - 1)

• (3x -1) (3x - 1)

• (5x - 1)(4x + 1)