2a²/a²-b² -b/a-b -a/a+b

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2a²/a²-b² -b/a-b -a/a+b

2a²/a²-b² -b/a-b -a/a+b
2a²/a²-b² -b/a-b -a/a+b

2a²/a²-b² -b/a-b -a/a+b