Multiply and simplify: (x+1)(x2−x+1)(x+1)(x^2 - x + 1)(x+1)(x2−x+1).
x3−1x^3 - 1x3−1
x3+1x^3 + 1x3+1
x3+x2+x+1x^3 + x^2 + x + 1x3+x2+x+1
x2+1x^2 + 1x2+1