Zadanie Oblicz:
(2*\frac{5}{6})^2-(4^2-\sqrt{1\frac{7}{9}})=
źródło:
(2*\frac{5}{6})^2-(4^2-\sqrt{1\frac{7}{9}})=(\frac{5}{3})^2-(16-\sqrt{\frac{16}{9}})=
=\frac{25}{9}-(16-\frac{4}{3})=2\frac{7}{9}-(16-1\frac{1}{3})=
=2\frac{7}{9}-14\frac{2}{3}=2\frac{7}{9}-14\frac{6}{9}=2\frac{7}{9}-13\frac{15}{9}=-11\frac{8}{9}