[tex]( \frac{1}{ \sqrt{3} } + \frac{1}{ \sqrt[]{2} } ) \times \sqrt{6 } - ( \frac{ 1}{ \sqrt{5} } + \frac{1}{ \sqrt{3} } ) \times \sqrt{15} + ( \frac{1}{ \sqrt{2} } - \frac{1}{ \sqrt{5} } ) \times \sqrt{10} [/tex]
E urgent!!!!!!!!! ​