Răspunsuri

2014-06-04T22:57:44+03:00
25x*5y=125 => 125xy = 125
Din  \sqrt{x} +  \sqrt{y} = 2 => x =1 si y = 1 apartin lui R
Cel mai inteligent răspuns!
2014-06-04T23:01:40+03:00
25x*5y=125⇔xy=1
√x+√y=2 ridicam la patrat⇒x+2√xy+y=4, dar xy=1⇒x+y=2
s=2, p=1 formam ecuatia de forma x²-sx+p=0
x²-2x+1=0
(x-1)²=0⇔x=1
deci x=y=1

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