5y 5y^2 5+2+2y+3y^2 1

请输入您的数学问题…… 5y-5y^2 -5+2+2y+3y^2 -1

问题

5 y - 5 y^{2} - 5 + 2 + 2 y + 3 y^{2} - 1

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