Răspunsuri

2014-11-15T20:50:43+02:00
A=9 ca sa fie patrat perfect
A=2a+a2=29+92=121=(11)²
b)  a=7
A=27+72=99
b=6
B=236+362+623=1221
37xA=3xB
37x99=3x1221
3663=3663