Question

calculati . 1 supra radical din 5 minus 2 minus modul din 1 minus radical din 5

Answer 1

$\frac{ \sqrt{5} }{5} -2-( \sqrt{3} -1)=\frac{ \sqrt{5} }{5}-2- \sqrt{3} +1= \frac{ \sqrt{5}-10-5 \sqrt{3} +5 }{5} = \frac{ \sqrt{5}-5 \sqrt{3}-5 }{5}$