3的负²+(三分之一)º×(三分之一)² ;
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![3的负²+(三分之一)º×(三分之一)² ;](/uploads/image/z/5289929-17-9.jpg?t=3%E7%9A%84%E8%B4%9F%26%23178%3B%EF%BC%8B%EF%BC%88%E4%B8%89%E5%88%86%E4%B9%8B%E4%B8%80%EF%BC%89%26%23186%3B%C3%97%EF%BC%88%E4%B8%89%E5%88%86%E4%B9%8B%E4%B8%80%EF%BC%89%26%23178%3B+%EF%BC%9B)
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3的负²+(三分之一)º×(三分之一)² ;
3的负²+(三分之一)º×(三分之一)² ;
3的负²+(三分之一)º×(三分之一)² ;
=1/9+1×1/9
=1/9+1/9=2/9
2/9
=1/9+1×1/9
=2/9+1
=11/9
原式=1/(3^(-2))+1*1/(3^2)
=1/9+1/9
=2/9
=1/9+1+1/9
=11/9
=1又2/9
=5/9
3^(-2)+(1/3)^0(1/3)^2
=(1/3)^2+(1/3)^
=1/9+1/9
=2/9
=1/9+1×1/9
=1/9+1/9=2/9
3^(-2)+(1/3)^0×(1/3)^2=1/9+1×1/9=2/9
2/9