Răspunsuri

2014-02-18T19:53:54+02:00
25-x patrat.

aici se aplica formula
(a+b)(a-b)=a patrat- b patrat
2014-02-18T19:53:59+02:00
Le scriem separat.
5+x = 0 => x = -5
5-x = 0 => x = 5
Success!