Factoring Trinomials Leading Coefficient Greater Than One

One of these trinomials can't factor further, the rest can factor. Which is it?

• 10x² - 41x + 18

• 5x² + 9x + 4

• 9x² - 9x - 2

• 5x² + 13x - 6

2x² - 2x - 12

• 2(x - 2)(x + 3)

• Prime

• 2(x + 2)(x - 3)

• (2x + 4)(x - 3)

9x² - 27xy - 36y²

• 9(x - y)(x + 4y)

• (9x - 9y)(x + 4y)

• 9(x + y)(x - 4y)

• Prime

30a² + 16a - 32

• 2(5a + 4)(3a - 4)

• (10a - 8)(3a + 4)

• (5a - 4)(6a + 8)

• 2(5a - 4)(3a + 4)

12x² - 52x - 40

• 4(3x + 2)(x - 5)

• (3x + 2)(4x - 20)

• (12x + 8)(x - 5)

• (12x + 8)(x - 5)

8y² + 36y - 20

• 4(2y + 1)(y - 5)

• (8y - 4)(y + 5)

• 4(2y - 1)(y + 5)

• (2y - 1)(4y + 20)