Question

Ajutati-ma cu exercitiul 5

b33e32e111dd416fe101f972929a99f1.pdf

Answer 1

= $\frac{ \sqrt{5} }{2- \sqrt{5} } + \frac{2}{2+ \sqrt{5} } =$
= $\frac{ \sqrt{5}(2+ \sqrt{5} ) }{4-5} + \frac{2(2- \sqrt{5}) }{4-5}$
= $\frac{2 \sqrt{5} +5+4-2 \sqrt{5} }{-1}$
=-9