Thực hiện nhân, chia các phép tính: x^2 + x/ x^2 + x+ 1
Giải thích
x2+xx2+x+1−2x3+x2−xx3−1−2−1x−1:2x−1x−x2=x2+xx2+x+1−2x3+x2−x−2x3+2−x2−x−1x−1x2+x+1.−xx−12x−1=x2+xx2+x+1−−2x+1.−xx2+x+1.2x−1=x2+xx2+x+1+−xx2+x+1=x2x2+x+1
x2+xx2+x+1−2x3+x2−xx3−1−2−1x−1:2x−1x−x2=x2+xx2+x+1−2x3+x2−x−2x3+2−x2−x−1x−1x2+x+1.−xx−12x−1=x2+xx2+x+1−−2x+1.−xx2+x+1.2x−1=x2+xx2+x+1+−xx2+x+1=x2x2+x+1