x-1分之x的立方-x的平方-x-1=

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 10:49:31
x-1分之x的立方-x的平方-x-1=

x-1分之x的立方-x的平方-x-1=
x-1分之x的立方-x的平方-x-1=

x-1分之x的立方-x的平方-x-1=
=x³/(x-1) -(x²+x+1)
=x³/(x-1) -(x-1)(x²+x+1)/(x-1)
=x³/(x-1) -(x³-1)/(x-1)
=1/(x-1)