(1+1/x)•x^2-2x+1/x^2-1

来源：学生作业帮助网编辑：六六作业网时间：2024/11/22 05:07:24

(1+1/x)•x^2-2x+1/x^2-1(1+1/x)•x^2-2x+1/x^2-1(1+1/x)•x^2-2x+1/x^2-1=(x+1)/x×(x-1)&#

(1+1/x)•x^2-2x+1/x^2-1
(1+1/x)•x^2-2x+1/x^2-1

(1+1/x)•x^2-2x+1/x^2-1
=(x+1)/x ×(x-1)²/(x+1)(x-1)
=(x+1)/x× (x-1)/(x+1)
=(x-1)/x