Răspunsuri

2014-11-08T20:13:35+02:00
B=81(1+2+..+49)
b=81 ( 49x50) :2
b=81x49x25
b=9 la puterea 2 x 7 la puterea 2 x 5 la puterea 2
b= 9 x 7 x5 totul la puterea 2 
b=pp
Cel mai inteligent răspuns!
2014-11-08T20:13:54+02:00
B=81*(1+2+3+..+49)=81.49.50/2=
9².5².7²=(5.7.9)²
ceea ce inseamna patrat perfect
1 5 1