Question
Download Solution PDFIf (a + b + c) = 13, and (ab + bc + ca) = 54, find the value of (a2 + b2 + c2).
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFormula used:
(a + b + c)2 = a2 + b2 + c2+ 2(ab + bc + ca)
Calculation:
⇒ 132 = a2 + b2 + c2+ 2 × 54
⇒ 169 - 108 = a2 + b2 + c2
⇒ a2 + b2 + c2 = 61
∴ The correct option is 3
Last updated on Jul 12, 2025
-> The SSC CGL Application Correction Window Link Live till 11th July. Get the corrections done in your SSC CGL Application Form using the Direct Link.
-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.
-> Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.
-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline.
-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.
-> The RRB Railway Teacher Application Status 2025 has been released on its official website.
-> The OTET Admit Card 2025 has been released on its official website.