x² - 2x - 9 is equal to: 1. (x - 9)(x + 3) 2. (x - 9)(x - 3) 3. (x + 9)(x - 3) 4. (x + 9)(x + 3)

Given, Hence, option 1 is the correct option.

H.C.F of x² + 3x + 2 and x² - 2x - 3 is :
(x + 1)
(x + 1)(x + 2)(x - 3)
1
none of these

(3a - 1)² - 6a + 2 is equal to:
(3a - 1)(a - 1)
3(3a - 1)(a - 1)
(3a - 1)(a + 1)
3(3a - 1)(a + 1)