Răspunsuri

2014-02-16T22:03:20+02:00
X,y,x²,y² formeaza proportie ⇒ x/y=x²/y² ⇔ x/y=(x/y)² | :x/y ⇒ x/y=1 ⇒x=y
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2014-02-17T00:46:00+02:00