Question

Efectuati : 2 : (2/3) la puterea a 2-a + 11/5 : 11/10
Dau coroana !

Answer 1

2:($\frac{2}{3}$)²+$\frac{11}{5}$:$\frac{11}{10}$=
=2:$\frac{4}{9}$+$\frac{11}{5}$:$\frac{11}{10}$
=2·$\frac{9}{4}$+$\frac{11}{5}$·$\frac{10}{11}$ (simplificăm)
=$\frac{9}{2}$+$\frac{2}{1}$ (amplificăm $\frac{2}{1}$ cu 2)
=$\frac{9}{2}$+$\frac{4}{2}$
=$\frac{13}{2}$
=6,5