Question

Factorise xcube-3xsquare-9x-5​

Answer 1

Answer:

I hope that you will get your answer... ☺☺☺☺

Answer 2

Answer:

(x + 1)²(x - 5)

Step-by-step explanation:

(- 1) zeroes given polynomial x³ - 3x² - 9x - 5 , then (x + 1) is a factor of the polynomial

(x³ - 3x² - 9x - 5) ÷ (x + 1) = x² - 4x - 5

5 and (- 1) zeroes x² - 4x - 5 , then

x² - 4x - 5  = (x + 1)(x - 5)

(x³ - 3x² - 9x - 5) = (x + 1)²(x - 5)