Răspunsuri

2014-11-16T12:58:05+02:00
Cel mai inteligent răspuns!
2014-11-16T12:59:00+02:00
2x²+2√2x+1=(x√2+1)²              formula  (a+b)²=a²+2ab+b²

a²·b²-16c²=(ab+4c)(ab-4c)        formula a²-b²=(a+b)(a-b)
2 4 2