Simplify: x(x2+x+1)x(x^2 + x + 1)x(x2+x+1).
x3+x2+xx^3 + x^2 + xx3+x2+x
x2+x+1x^2 + x + 1x2+x+1
3x33x^33x3
x3+1x^3 + 1x3+1