Question

factorise method x^3-x^2-9x +9

Answer 1

Answer:

(x-1)(x-3)(x+3)

Step-by-step explanation:

x=1 is one solution by inspection.

x^3 x^2 x^1 x^0

1 |. 1. -1. -9. 9

|. 0. 1. 0. -9

---------------------------------

+ 1. 0. -9. 0

From above we get

x^3 - 9=(x-3)(x+3)

Hence, (x-1)(x-3)(x+3)