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[tex] Aratati \frac{2}{rad3-1} -rad3=1 [/tex]

Răspuns :

rationalizam cu rad3+1 si vom avea
2(rad3+1)/3-1 - rad3=1
2(rad3+1)/2-rad3=1   aducem la ac numitor
2(rad3+1)-2rad3=2
2rad3+2-2rad3=2   radicalii se anuleaza reciproc si ramane
2=2 Adevarat