當x的2次方-2=0,求(x-1)的2次方/x的2次方-1+x的2次方/x+1

當x的2次方-2=0,求(x-1)的2次方/x的2次方-1+x的2次方/x+1

x²;-2=0(x-1)²;/(x²;-1)+x²;/(x+1)=(x-1)²;/[(x-1)(x+1)]+x²;/(x+1)=(x-1)/(x+1)+x²;/(x+1)=(x²;+x-1)/(x+1)=(x+1)/(x+1)=1此題如仍有疑問,歡迎追問!