[tex](1-\frac{2}{5})^2* \frac{3}{2}[/tex]
[tex]=(1-\frac{2}{5})(1-\frac{2}{5})* \frac{3}{2}[/tex]
[tex]=1-\frac{2}{5}-\frac{2}{5}+(\frac{2}{5})^2* \frac{3}{2}[/tex]
[tex]=1-\frac{2}{5}-\frac{2}{5}+\frac{4}{25}* \frac{3}{2}[/tex]
[tex]=1-\frac{2}{5}-\frac{2}{5}+\frac{12}{50}[/tex]
[tex]=\frac{50}{50}-\frac{20}{50}-\frac{20}{50}+\frac{12}{50}|*50[/tex]
[tex]=50-40+12[/tex]
[tex]=10+12[/tex]
[tex]=22[/tex]
