Question

Radical din 5 • (2-2 radical 5) • radical din 5 • 2

Answer 1

 $\sqrt5\cdot(2-2\sqrt5)\cdot\sqrt5\cdot2=5\cdot2\cdot2(1-\sqrt5)=20\cdot(1-\sqrt5)$

Answer 2

2,5 rotunjit cu aproximatie vine 3 !