Explicație pas cu pas:
[tex] \frac{4}{5 \sqrt{2} } + \frac{3}{ \sqrt{8} } = \frac{4}{5 \sqrt{2} } + \frac{3}{2 \sqrt{2} } = \frac{4 \sqrt{2} }{5 \sqrt{2} } + \frac{3 \sqrt{2} }{5 \sqrt{2} } = \frac{2 \sqrt{2} }{5} + \frac{3 \sqrt{2} }{5 \times 2} = \frac{2 \sqrt{2} }{5} + \frac{ 3 \sqrt{2} }{10} = \frac{4 \sqrt{2} + 3 \sqrt{2} }{10} = \frac{7 \sqrt{2} }{10} [/tex]