(x^5+x)+1
x(x^4+1)+1
x(x^2+1)^2+1
tự lm tiếp nha
\(x^5+x+1=x^5-x^2+x^2+x+1\)
\(=x^2\left(x^3-1\right)+x^2+x+1\)
\(=x^2\left(x-1\right)\left(x^2+x+1\right)+x^2+x+1\)
\(=\left(x^3-x\right)\left(x^2+x+1\right)+x^2+x+1\)
\(=\left(x^3-x+1\right)\left(x^2+x+1\right)\)
Chúc bạn học tốt.