Multiply: x(x2−1)+1(x2−1)x(x^2 - 1) + 1(x^2 - 1)x(x2−1)+1(x2−1).
x3+x2−x−1x^3 + x^2 - x - 1x3+x2−x−1
x3−xx^3 - xx3−x
x2+x−1x^2 + x - 1x2+x−1
x3−1x^3 - 1x3−1