35.8*6.7+35.8*3.7+35.8*0.4=35.8*(6.7+3.7+0.4)携皮=35.8*10=358,快快,快采纳辩数差,我毕档等财富值呢,我有道二元函数求条件极值亟待解决
原式塌裂闷=团弯源拆3.58×67+3.58×37-3.58×4=3.58×(67+37-4)=3.58×100=358