Question

Simplificati raportul:
a) 5-√5 supra lui 2√5= va rog multtttttttttttttttttttttttt

Answer 1

(5-√5)/2√5
=√5(√5-1)/2√5
=(√5-1)/2

Answer 2

$\displaystyle \frac{5- \sqrt{5} }{2 \sqrt{5} } = \frac{ \sqrt{5} (5- \sqrt{5} )}{10} = \frac{5 \sqrt{5} -5}{10} = \frac{5( \sqrt{5} -1)}{10} = \frac{ \sqrt{5} -1}{2}$