计算:(1)6(7+1)(72+1)(74+1)(78+1)+1;(2)1.345×0.345×2.69-1.3453-1.345×0.
计算:(1)6(7+1)(72+1)(74+1)(78+1)+1;(2)1.345×0.345×2.69-1.3453-1.345×0.3452....
计算:(1)6(7+1)(72+1)(74+1)(78+1)+1;(2)1.345×0.345×2.69-1.3453-1.345×0.3452.
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