Răspuns:
[tex] \frac{ \sqrt{1225} }{ \sqrt{441} ?} \times ( \sqrt{225} \: ) ^{ - 1 } \\ = > \frac{35}{21} \times 15 ^{ - 1} \: simplificam \: 35 \: si21 \: prin \: 7 = > \\ \frac{5}{3} \times \frac{1}{15} \: simpificam \: 5 \: si15 \: = > \\ \frac{1}{3} \times \frac{1}{3} = \frac{1}{9} [/tex]
