计算:::(-3)^m+3(-3)^m-1的值是
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计算:::(-3)^m+3(-3)^m-1的值是
计算:::(-3)^m+3(-3)^m-1的值是
计算:::(-3)^m+3(-3)^m-1的值是
(-3)^m+3(-3)^m-1
=(-3)^m-(-3)×(-3)^m-1
=(-3)^m-(-3)^m
=0
(-3)^m+3(-3)^(m-1)=(-3)^m+[3(-3)^m]*(-3)^(-1)
=(-3)^m+[3(-3)^m]*(-1/3)
=(-3)^m-(-3)^m=0
-12m-1
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