计算题（（2.39-0.26+1）2 +（4.78+0.13-1）2）/（2*2.392-3*2.39*0.13-2*0.132+2.39+3*0.13-1=?

（（2.39-0.26+1）2 +（4.78+0.13-1）2）/（2*2.392-3*2.39*0.13-2*0.132+2.39+3*0.13-1=

=(9.7969+15.2881)/(3.8519+0.264+2.39+0.39-1)
=25.085/5.8959
约等于4.25

=(9.7969+15.2881)/(3.8519+0.264+2.39+0.39-1)
=25.085/5.8959
约等于4.25

对,不要怕麻烦,按照先乘除,后加减,先算括号,后算式子,一步步推,不过小学考这题,太难为人了吧!

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