Phân tích thành nhân tử: x^8 + x +1
Giải thích
x8+x+1=x8−x2+x2+x+1=x2x6−1+x2+x+1=x2x3−1x3+1+x2+x+1=x2x−1x2+x+1x+1x2−x+1+x2+x+1=x2+x+1x2x−1x+1x2−x+1+1
x8+x+1=x8−x2+x2+x+1=x2x6−1+x2+x+1=x2x3−1x3+1+x2+x+1=x2x−1x2+x+1x+1x2−x+1+x2+x+1=x2+x+1x2x−1x+1x2−x+1+1