化简x-1分之x²+1-x分之x

问题描述:

化简x-1分之x²+1-x分之x

x²/(x-1)+x/(1-x)=x²/(x-1)-x/-(1-x)=x²/(x-1)-x/(x-1)=x²-x/(x-1)=x(x-1)/(x-1)=x