Answer:
Option A x³ - 2x² - 17x - 18
Step-by-step explanation:
We have to simplify the given expression
(x+2) (x² - 4x - 9)
x(x² - 4x - 9) + 2 (x²- 4x - 9) [distributive Law]
= x³ - 4x² - 9x + 2x² - 8x - 18
Now we accumulate similar terms together.
= x³ - 4x² + 2x² - 9x - 8x - 18
= x³ - 2x² - 17x - 18
This simplified form of the expression matches with option A.
Option A x³ - 2x² - 17x - 18
