Răspunsuri

2014-09-16T21:48:15+03:00
(√5 - 3√2)² - (2√3 - 5)=(√5)²-6√10+(3√2)²-2√3+5
= 5-6√10+18-2√3+5 
= 28- 6√10-2√3
= 2(14-3√10-√3)

* 7-3x=8
-3x= 8-7
-3x= 1⇒ x= -1/3