Răspunsuri

2014-05-17T14:39:09+03:00
26/25 (din prima ecuatie rezulta x=5, apoi ai 25 +1 /25 = 26/25)
2014-05-17T14:39:54+03:00
X-1/2=2
x-1=2*2
x-1=4
x=4+1
x=5

(x+1/x)²= (x+1)²/x²= (5²+ 2*5*1 + 1²)/5²= (25+10+1)/25= 36/25