不用计算器计算： lo g 3 27 +lg25+lg4+ 7 log 7 2 +(-9.8 ) 0 = 不用计算器计算：（1）log327+lg25+lg4+7lo...

\u4e0d\u7528\u8ba1\u7b97\u5668\u8ba1\u7b97\uff1alog327+lg25+lg4+7log72+(?9.8)0\uff0e

\u539f\u5f0f=log3332+lg(25\u00d74)+2+1\uff084\u5206\uff09=32+lg102+3\uff088\u5206\uff09=32+2+3\uff1d132\uff0812\u5206\uff09

\uff081\uff09\u539f\u5f0f=log3332+lg(25\u00d74)+2+1=32+lg102+3=32+2+3\uff1d132\uff0e\uff082\uff09\u539f\u5f0f=(827)23?(499)12+(10008)23\u00d7225=49?73+25\u00d7225=?179+2\uff1d19\uff0e