Doar punctele d,e,f.Dau coroana.Multumesc anticipat ​

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Răspuns :

\sqrt{\frac{49}{64} }-\sqrt \frac{25}{144} =\frac{7}{8} -\frac{5}{12} = \frac{21-10}{24} =\frac{11}{24} \\\\

\sqrt{\frac{81}{25} }-\sqrt \frac{9}{100} =\frac{9}{5} -\frac{3}{10} = \frac{18-3}{10} =\frac{15}{10} =\frac{5}{2} \\\\\\