Question
Download Solution PDF(a + b + c) = 13, এবং (ab + bc + ca) = 54 হলে, (a 2 + b 2 + c2) এর মান নির্ণয় করুন
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFঅনুসৃত সূত্র:
(a + b + c)2 = a2 + b2 + c2 + 2 (ab + bc + ca)
গণনা:
⇒ 132 = a2 + b2 + c2 + 2 × 54
⇒ 169 - 108 = a 2 + b 2 + c2
⇒ a2 + b2 + c2 = 61
∴ সঠিক বিকল্পটি 3
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