0,75+2/4.[(0,2+1/3)²-0,3]=
[tex] \frac{3}{4} +\frac{2}{4}[(\frac{1}{5}+\frac{1}{3})^2-\frac{3}{10}] \\ \\ \frac{3}{4}+\frac{2}{4}[(\frac{3+5}{15})^2-\frac{3}{10}] \\ \\ \frac{3}{4}+\frac{2}{4}[(\frac{8}{5})^2-\frac{3}{10}] \\ \\ \frac{3}{4}+\frac{2}{4}[\frac{64}{25}-\frac{3}{10}] \\ \\ \frac{3}{4}+\frac{2}{4}[\frac{128-15}{50}] \\ \\ \frac{3}{4}+\frac{2}{4}[\frac{113}{50}] \\ \\ \frac{3}{4}+\frac{226}{200} \\ \\ \frac{150+226}{200}=\frac{376}{200}[/tex]
