Question

3,5x3,5-1,2x {11+1,1x[6,5+2x(0,45-0,4)]}=

Answer 1

3.5×3.5-1.2×{11+1.1×[6.5+2×(0.45-0.4)]}=
3.5×3.5-1.2×{11+1.1×[6.5+2×(0.05)]}=
3.5×3.5-1.2×[11+1.1×(6.5+0.1)]=
3.5×3.5-1.2×[11+1.1×(6.6)=
3.5×3.5-1.2×(11+7.26)=
3.5×3.5-1.2×18.26=

12.25-21.915=-9.662
sucees