(3a²/a²-1) + (5a/a-1) = 3a²+5a²/a²-1=8a²/a²-1
Ответ: 8a²/a²-1
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(3a²/a²-1) + (5a/a-1) = 3a²+5a²/a²-1=8a²/a²-1
Ответ: 8a²/a²-1