Simplify: (x3+x2+x+1)−(x3+x2)(x^3 + x^2 + x + 1) - (x^3 + x^2)(x3+x2+x+1)−(x3+x2).
x+1x + 1x+1
2x3+2x2+x+12x^3 + 2x^2 + x + 12x3+2x2+x+1
x−1x - 1x−1
111