2-y/y²-9 +5-2y/y-3 = 2-y+(y+3)(5-2y)/(y-3)(y+3) = 2-y+5y-2y²+15-6y/y²-9 = 17-2y-2y²/y²-9 = -2y²-2y+17/y²-9
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2-y/y²-9 +5-2y/y-3 = 2-y+(y+3)(5-2y)/(y-3)(y+3) = 2-y+5y-2y²+15-6y/y²-9 = 17-2y-2y²/y²-9 = -2y²-2y+17/y²-9