What must be subtracted from a? + b2 + c2 – 3abc to get 2a? – b2 – 3c2 + abc
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we have to subtract : 3abc - a² - b² from c² + 2a² - b² + abc solution:- => (c² + 2a² - b² + ...
Missing: 3c2 + | Must include: 3c2 +
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