Răspuns:
a)
[tex]( \frac{8}{5 \sqrt{6} } - \frac{4}{ \sqrt{24} } - \frac{16}{15 \sqrt{6} } ) - ( \frac{8}{3 \sqrt{54} } - \frac{6}{ \sqrt{54} } ) = ( \frac{8}{5 \sqrt{6} } - \frac{4}{2 \sqrt{6} } - \frac{16}{15 \sqrt{6} } ) - ( \frac{2}{2 \sqrt{54} } ) = \frac{ - 12}{ - 12 \sqrt{6} } - \frac{2}{2 \sqrt{54} } = \frac{ - 12}{ - 12 \sqrt{6} } - \frac{2}{6 \sqrt{6} } = \frac{ - 14}{ - 18 \sqrt{6} } [/tex]
eu chiar mam chinut dar e de abia primul
