x-1/x=3,则x²+1/x²的值是( )

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/19 07:11:12
x-1/x=3,则x²+1/x²的值是()x-1/x=3,则x²+1/x²的值是()x-1/x=3,则x²+1/x²的值是()x-1/x=3

x-1/x=3,则x²+1/x²的值是( )
x-1/x=3,则x²+1/x²的值是( )

x-1/x=3,则x²+1/x²的值是( )
x-1/x=3
平分得 x^2-2+1/x^2=9
x^2+1/x^2=9+2=11