у≠0
у≠2
у≠-2
(3(у+2)+7(у-2))/(у²-4) = 10/у
(3у+6+7у-14)/(у²-4) = 10/у
(10у-8)/(у²-4)=10/у
у(10у-8)=10у²-40
10у²-8у=10у²-40
10у²-10у²-8у+40=0
-8у=-40
у=-40/-8
у=5
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Answers & Comments
у≠0
у≠2
у≠-2
(3(у+2)+7(у-2))/(у²-4) = 10/у
(3у+6+7у-14)/(у²-4) = 10/у
(10у-8)/(у²-4)=10/у
у(10у-8)=10у²-40
10у²-8у=10у²-40
10у²-10у²-8у+40=0
-8у=-40
у=-40/-8
у=5