Question

这个式子为什么这样化简，，求解！！谢谢！

Answer 1

x^5 +x^4 -8
=x^2.(x^3-x) +x^4+x^3 -8
=x^2.(x^3-x) +x(x^3-x) +x^3+x^2 -8
=x^2.(x^3-x) +x(x^3-x) +(x^3-x)+x^2+x -8
=>
(x^5 +x^4 -8)/(x^3-x)
=x^2 +x +1 + [(x^2+x-8)/(x^3-x)]