已知m^3-8m^2=-9,2m^2-n^2=-7.求3(m^3-2n^2)-2【m^3-(3m^

已知m^3-8m^2=-9,2m^2-n^2=-7.求3(m^3-2n^2)-2【m^3-(3m^2-1)】-n^2的值
2025-02-26 00:41:30
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