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Plz help i don't understanding |
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Answer» HIII dear________ good evening_________✌️✌️✌️✌️✌️ here's your answer__________________ ____________ _______________________ Use this formulla : (a + b + c)2 = a2 + b2 + c2 + 2ab + 2BC + 2ca (a+2b+5C)2 = (a)2 + (2b)2 + (5c)2 + 2(a)(2b) + 2(2b)(5c) + 2(5c)(a) = (a)2 + (2b)2 + (5c)2 + 4AB + 20bc + 10ac |
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