Question

rationalizata fractia: radical din 2+ radical din 5/2radical din5 este:

Answer 1

$\sqrt{2} + \frac{ \sqrt{5} }{2 \sqrt{5} } = \sqrt{2} + \frac{( \sqrt{5}) {}^{2} }{2 \times ( \sqrt{5}) {}^{2} } = \sqrt{2} + \frac{5}{2 \times 5} = \sqrt{2} + \frac{5}{10} = \sqrt{2} + \frac{1}{2} = \frac{2 \sqrt{2} + 1 }{2}$

Answer 2

$\sqrt{2} + \frac{ \sqrt{5} }{2 \sqrt{5} } = \sqrt{2} + \frac{ \sqrt{5} \sqrt{5} }{2 \times 5} = \sqrt{2} + \frac{ \sqrt{25} }{2 \times 5} = \sqrt{2} + \frac{5}{2 \times 5} = \sqrt{2} + \frac{5}{10} = \sqrt{2} + \frac{1}{2}$