Question

Factorise x^3 - 3x^2 - 9x - 5​

Answer 1

Answer:

(x +1), (x -5) and (x +1)

Explanation:

The computation of the factorization is shown below

Data provided in the question

$X^3 - 3x^2 - 9x - 5$

Based on the above information, the factors are

Now we have to open these equations in order to get the factors which are as follows

$= x^3 + x^2 - 4x^2 - 4x - 5x - 5$

$= x^2( x + 1) - 4x ( x + 1) - 5(x + 1)$

$= (x + 1) (x^2 - 4x - 5)$

$= (x + 1)(x^2 -5x + x - 5)$

So,

= (x + 1) (x - 5) (x + 1)

Therefore the (x +1), (x -5) and (x +1) are the factors of the mention polynomial give in the question