factorise: x³-2x²-x+2
plz solve by the language and by correct method ​​

Answer:

(x-2) (x +1) (x-1)

Step-by-step explanation:

x³- 2x² – x + 2

(Take x² common in the first two terms and – 1 common in the last two terms)

x²(x – 2) -1(x – 2)

(x-2)(x²-1)

By the identity, a² – b² = (a+b) (a-b),

(x-2) (x+1)(x-1)