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11-If a+b+c =0 and a²+b² +c² = 16, find the value of ab + bc + ca |
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Answer» Answer: -8 Step-by-step EXPLANATION: a+b+c= a^2 + b^2 + c^2 + 2(ab + BC + ca ) 0 = 16 + 2(ab + bc + ca ) -16 = 2(ab + bc + ca ) ab + bc + ca = -16/2 ab + bc + ca = -8 Please MARK me the BRAINLIEST |
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