解方程：9(x-1)^2=1/81

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解方程：9(x-1)^2=1/81解方程：9(x-1)^2=1/81解方程：9(x-1)^2=1/819(x-1)^2=1/813(x-1)=±1/9x-1=±1/27x=1±1/279(x-1)^2

解方程：9(x-1)^2=1/81
解方程：9(x-1)^2=1/81

解方程：9(x-1)^2=1/81
9(x-1)^2=1/81
3(x-1)=±1/9
x-1=±1/27
x=1±1/27

9(x-1)^2=1/81
(x-1)²=1/729
x-1=±1/27
x1=28/27, x2=26/27

9（x-1）^2=1/81
（x-1）^2=1/729
x-1=1/27或x-1=-1/27
x=28/27或 x=26/27

9（x-1）²=1/81
3²（x-1）²=（1/9）²
3（x-1）=±1/9
x-1=±1/27
x=1±1/27
x1=28/27
x2=26/27

(x-1)^2=1/81*1/9
(x-1)=1/27或-1/27
所以X=28/27或X=26/27