求解

来源: TrueTrueTrue! 于 2011-02-15 00:47:11 [旧帖] [给我悄悄话] 本文已被阅读：次

a, b, c 满足 a^2 + 2b = 7, b^2 + 4c = -7, c^2 + 6a = 14. 求a^2 + b^2 + c^2 = ?

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