Question

The factors of a3 -1 are: (a-1),(a2+a-1) (a+1),(a2-a+1) (a+1) (a-1),(a2+a+1)

Answer 1

a^3-b^3= (a-b)(a^2+ab+b^2) Put a=a,b=1 a^3-1^3= (a-1)(a^2+a+1) ans