Va rog frumos dau coroana si ma abonez

a)
[tex](( \frac{39}{10}) {}^{2} - \frac{23}{10} ) \times ( \frac{27}{20} - \frac{7}{20} )[/tex]
[tex](( \frac{39}{10} ) {}^{2} - \frac{23}{10} ) \times 1[/tex]
[tex] \frac{1521}{100} - \frac{23}{10} [/tex]
[tex] \frac{1291}{100} [/tex]