Question
Download Solution PDF(a - b) = 3 மற்றும் ab = 70 எனில், (a3 - b3) இன் மதிப்பைக் காண்க.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFகொடுக்கப்பட்டது:
(a - b) = 3 மற்றும் ab = 70
சூத்திரம்:
a3 - b3 = (a - b)3 + 3ab(a - b)
கணக்கீடு:
a3 - b3 = (a - b)3 + 3ab(a - b)
⇒ a3 - b3 = 33 + 3 × 70 × 3
⇒ a3 - b3 = 27 + 630
∴ a3 - b3 = 657
சாமர்த்தியமான தந்திரம்
a = 10 மற்றும் b = 7 என எடுத்துக் கொள்ளவும் [(a - b) = 10 - 7 = 3 மற்றும் ab = 10 × 7 = 70]
∴ a3 - b3 = 103 - 73 = 1000 - 343 = 657.
Last updated on Jul 10, 2025
-> RRB NTPC Under Graduate Exam Date 2025 has been released on the official website of the Railway Recruitment Board.
-> The RRB NTPC Admit Card will be released on its official website for RRB NTPC Under Graduate Exam 2025.
-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here.
-> The RRB NTPC 2025 Notification released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.
-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.
-> Prepare for the exam using RRB NTPC Previous Year Papers.
-> Get detailed subject-wise UGC NET Exam Analysis 2025 and UGC NET Question Paper 2025 for shift 1 (25 June) here