3ab²-[2a²b+(5ab²-3a²b)-a²]+b²=3ab^2-2a^2b-5ab^2+3a^2b+a^2+b^2=-2ab^2+a^2b+a^2+b^2=-2*-1*0.01+1*0.1+1+0.01=0.02+0.1+1+0.01=1.13