Odpowiedź:
[tex]\sqrt{1,44:0,49}=\sqrt{\frac{144}{100}:\frac{49}{100}}=\sqrt{\frac{36}{\not25_{1}}\cdot\frac{\not100^4}{49}}=\sqrt{36\cdot\frac{4}{49}}=\sqrt{36}\cdot\sqrt{\frac{4}{49}}=6\cdot\frac{2}{7}=\\\\=\frac{12}{7}=1\frac{5}{7}\\\\\\\sqrt{1\frac{9}{16}:1\frac{7}{9}}=\sqrt{\frac{25}{16}:\frac{16}{9}}=\sqrt{\frac{25}{16}\cdot\frac{9}{16}}=\sqrt{\frac{25}{16}}\cdot\sqrt{\frac{9}{16}}=\frac{5}{4}\cdot\frac{3}{4}=\frac{15}{16}[/tex]
