Hej!
[tex] \sqrt{19} \times 2 \times \sqrt{19} = \sqrt{ {19}^{2} } \times 2 = 19 \times 2 = 38 \\ \\ \frac{6}{5 \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} } = \frac{ 6\sqrt{3} }{5 \sqrt{ {3}^{2} } } = \frac{6 \sqrt{3} }{15} = \frac{2 \sqrt{3} }{5} [/tex]
Pozdrawiam! - Julka
