2(x³-2y²)-(x-2y)-(x-3y²+2x³)
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2(x³-2y²)-(x-2y)-(x-3y²+2x³)
2(x³-2y²)-(x-2y)-(x-3y²+2x³)
2(x³-2y²)-(x-2y)-(x-3y²+2x³)