Factoring expressions (quadratic, cubic)

Factor the following:

x² + 9x + 20

• (x - 4)(x - 5)

• (x + 20)(x + 1)

• (x + 4)(x + 5)

• (x + 10)(x + 2)

Factor the following:

5m² + 20m - 225

• 5(m - 5)(m + 9)

• (m - 5)(m + 9)

• 5(m - 5)(m - 9)

• 5(m + 45)(m - 1)

Factor the following expression:

16r³ - 8r² - 6r + 3

• (8r² - 3)(2r - 1)

• (8r² + 3)(2r + 3)

• (8r² + 3)(2r - 3)

• (8r² - 3)(8r² - 1)

Factor the following expression:

6x² - 54x + 84

• 6(x + 7)(x + 2)

• 6(x + 14)(x + 1)

• 6(x - 7)(x - 2)

• 6(r - 7)(x + 2)

Factor the following:

24n³ -3n² + 64n - 8

• 8(3n² - 8)(n - 1)

• 8(3n² - 1)(n + 1)

• (3n² + 8)(8n - 1)

• 8(3n² + 8)(n + 1)