Question
Download Solution PDFযদি x + y = 10 এবং xy = 12 হয়, তাহলে x2 - xy + y2 এর মান নির্ণয় করো।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
যদি x + y = 10 এবং xy = 12
ব্যবহৃত সূত্র:
(x + y)2 = x2 + 2xy + y2
গণনা:
(x + y)2 = x2 + 2xy + y2
⇒ 102 = x2 + 2xy + y2
⇒ 100 = x2 + 2(12) + y2
⇒ 100 = x2 + 24 + y2
⇒ x2 + y2 = 100 - 24
⇒ x2 + y2 = 76
আমাদের x2 - xy + y2 এর মান নির্ণয় করতে হবে
⇒ x2 - xy + y2 = 76 - 12
⇒ x2 - xy + y2 = 64
∴ সঠিক উত্তর হলো বিকল্প (3)।
Last updated on Jul 15, 2025
-> SSC Selection Phase 13 Exam Dates have been announced on 15th July 2025.
-> The SSC Phase 13 CBT Exam is scheduled for 24th, 25th, 26th, 28th, 29th, 30th, 31st July and 1st August, 2025.
-> The Staff Selection Commission had officially released the SSC Selection Post Phase 13 Notification 2025 on its official website at ssc.gov.in.
-> A total number of 2423 Vacancies have been announced for various selection posts under Government of India.
-> The SSC Selection Post Phase 13 exam is conducted for recruitment to posts of Matriculation, Higher Secondary, and Graduate Levels.
-> The selection process includes a CBT and Document Verification.
-> Some of the posts offered through this exam include Laboratory Assistant, Deputy Ranger, Upper Division Clerk (UDC), and more.
-> Enhance your exam preparation with the SSC Selection Post Previous Year Papers & SSC Selection Post Mock Tests for practice & revision.