Question
Download Solution PDFयदि x + y + z = 4 और x2 + y2 + z2 = 12 है, तो xy + yz + xz ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFप्रयुक्त सूत्र
(x + y + z)2 = x2 + y2 + z2 + 2(xy + yz + zx)
गणना
x + y + z = 4
दोनों पक्षों का वर्ग करने पर
⇒ (x + y + z)2 = 42
⇒ x2 + y2 + z2 + 2(xy + yz + zx) = 16
⇒ 2(xy + yz + zx) = 16 – 12
⇒ xy + yz + zx = 2
उत्तर 2 है।
Last updated on Jun 13, 2025
-> The SSC CGL Notification 2025 has been released on 9th June 2025 on the official website at ssc.gov.in.
-> The SSC CGL exam registration process is now open and will continue till 4th July 2025, so candidates must fill out the SSC CGL Application Form 2025 before the deadline.
-> 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.
-> Candidates should also use the SSC CGL previous year papers for a good revision.