初一数学分式的加减,急急急急急~

2025-06-22 12:46:32
推荐回答(1个)
回答1:

原式=(x+1)^2/((x+1)(x-1))-x/(x-1)=(x+1)/(x-1)-x/(x-1)=1/(x-1)=1/(1+√2)=√2-1