2x+2y/5a²b × 10ab²/x²-y²

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2x+2y/5a²b × 10ab²/x²-y²
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2x+2y/5a²b × 10ab²/x²-y²
2x+2y/5a²b × 10ab²/x²-y²

2x+2y/5a²b × 10ab²/x²-y²
2x+2y/5a²b × 10ab²/x²-y²
=4b/[a(x-y)]