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Cel mai inteligent răspuns!
2014-05-15T16:07:04+03:00
4a²+9b²-12ab=0
(2a-3b)²=0
2a-3b=0
4a+3b=4a-6b+9b=2(2a-3b)+9b=9b
2a+3b=2a-3b+6b=6b
raportul va deveni
9b/6b=3/2
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