Răspuns :
[tex] \sqrt{ \frac{3}{9} } \times ( - \frac{27}{2} ) = - \sqrt{ \frac{1}{3} } \times \frac{27}{2} = - \frac{1}{ \sqrt{3} } \times \frac{27}{2} = - \frac{27}{2 \sqrt{3} } = - \frac{9 \sqrt{3} }{2} [/tex]
[tex] \sqrt{ \frac{3}{9} } \times ( - \frac{27}{2} ) = - \sqrt{ \frac{1}{3} } \times \frac{27}{2} = - \frac{1}{ \sqrt{3} } \times \frac{27}{2} = - \frac{27}{2 \sqrt{3} } = - \frac{9 \sqrt{3} }{2} [/tex]