Răspunsuri

2014-03-24T18:23:37+02:00
N=1989(1989-1)-1988=1989x1988-1988=1988(1989-1)=1988^2 (la puterea a doua)
y/(1988x4)=497/n
y/(1988x4)=497/1988^2
y=1988x4x497/1988^2
y=4x497/1988=1988/1988=1