Question

a^3-3a^2-a+3

Answer 1

`a^3-3a^2-a+3`

`=a^2(a-3)-(a-3)`

`=(a-3)(a^2-1)`

`=(a-3)(a-1)(a+1)`

Answer 2

`a^3-3a^2-a+3`

`=a^2(a-3)-(a-3)`

`=(a-3)(a^2-1)`

`=(a-3)(a-1)(a+1)`

Answer 3

    a³-3a²-a+3

= a². (a-3) - (a-3)

= (a-3).(a²-1)