5x^3-3x^2+2x-x^3+6x^2 合并同类项.
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5x^3-3x^2+2x-x^3+6x^2合并同类项.5x^3-3x^2+2x-x^3+6x^2合并同类项.5x^3-3x^2+2x-x^3+6x^2合并同类项.亲,*^__^*,不懂请追问,满意请点
5x^3-3x^2+2x-x^3+6x^2 合并同类项.
5x^3-3x^2+2x-x^3+6x^2 合并同类项.
5x^3-3x^2+2x-x^3+6x^2 合并同类项.
亲,*^__^* ,不懂请追问,满意请点击设为满意答案,谢谢你!
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