Answer:
[tex](a-1)(a^2+a+2)\\[/tex]
Hi,
Step-by-step explanation:
[tex]Remember:\ x^3-y^3=(x-y)(x^2+xy+y^2)\\a^3-1+a-1\\\\=(a-1)(a^2+a+1)+1(a-1)\\\\=(a-1)(a^2+a+2)\\[/tex]
have a great day
god bless you
