一会儿上传答案!(x^5+x^4-8)/(x^3-x) =(x^4(x+1)-8)/(x(x^2-1))=(X^4(x+1)-8)/(x(x+1)(x-1))长除法的别着急！嗯，就等你了而(X^4(x+1)-8)/(x(x+1)(x-1))=x^3/(x-1) -(1/x-1/(1+x))*8/(x-1)我粗心算错了，谢谢x^3/(x-1) -(1/x-1/(1+x))*8/(x-1)=(x^2+x+1)+(1-8/(x^2+x))/(x-1)依次类推！