Practice problem
Multiply (−1−x)(1−x)(-1-x)(1-x)(−1−x)(1−x).
x2+2x−1x^2+2x-1x2+2x−1
x2−2x−1x^2-2x-1x2−2x−1
x2+1x^2+1x2+1
x2−1x^2-1x2−1
Type a concept, like “slope” or “photosynthesis”.
