Răspuns:
Salut !
[tex]a) - \frac{2 \sqrt{3} }{ \sqrt{2} } = - \frac{2 \sqrt{3} }{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } = - \frac{2 \sqrt{3} \sqrt{2} }{ \sqrt{2} \sqrt{2} } = - \frac{2 \sqrt{6} }{2} = - \sqrt{6} [/tex]
[tex]b) \frac{ - 4 \sqrt{6} }{3 \sqrt{2} } = \frac{ - 4 \sqrt{3} }{3} = - \frac{4 \sqrt{3} }{ 3} [/tex]
[tex]c) \frac{10}{ 2 \sqrt{5} } = \frac{5}{ \sqrt{5} } = \frac{5}{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } = \frac{5 \sqrt{5} }{ \sqrt{5} \sqrt{5} } = \frac{5 \sqrt{5} }{5} = \sqrt{5} [/tex]
[tex]d) \frac{15}{2 \sqrt{15} } = \frac{15}{ 2\sqrt{15} } \times \frac{ \sqrt{15} }{ \sqrt{15} } = \frac{15 \sqrt{15} }{2 \sqrt{15} \sqrt{15} } = \frac{15 \sqrt{15} }{2 \times 15} = \frac{15 \sqrt{15} }{30} = \frac{ \sqrt{15} }{2} [/tex]
Succes ! : )
