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a + b + c = 9 , a² + b² + c² = 29 হলে ab + bc + ca এর মান কত?

 


a + b + c = 9 , a2+b2+c2=29 হলে ab + bc + ca এর মান কত?
Asked on December 5, 2023 in BCS Questions and Answers 16th.
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    Answered on December 5, 2023.
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