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Prove that ∣∣∣∣a+b+2cabcb+c+2abcac+a+2b∣∣∣∣=2(a+b+c)3. |
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Answer» Prove that ∣∣ ∣∣a+b+2cabcb+c+2abcac+a+2b∣∣ ∣∣=2(a+b+c)3. |
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