1)173*(173+27)=173*200=173*2*100=34600
2)214*(314-214)=214*100=21400
3)0,4^2*(0,4+0,6)=0,16*1=0,16
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1)173*(173+27)=173*200=173*2*100=34600
2)214*(314-214)=214*100=21400
3)0,4^2*(0,4+0,6)=0,16*1=0,16