Răspuns:
2,5²+1,2×{11+1,1×[6,5+2×(8,65-8,6)]}=
6,25+1,2×[11+1,1×(6,5+2×0,05)]=
6,25+1,2×[11+1,1×(6,5+0,1)=
6,25+1,2×(11+1,1×6,6)=
6,25+1,2×(11+7,26)=
6,25+1,2×18,26=
6,25+21,912=28,162
Sper ca te-am ajutat!
