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Simplify:(a + b + c)2 - (a - b + c)2 |
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Answer» (a + b + c)2 - (a - b + c)2 = (a2 + b2+c2 + 2ab + 2bc + 2ac) - (a2 + b2 + c2 - 2ab - 2bc + 2ac) = 4ab + 4bc = 4(a + c)b |
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