Question
Download Solution PDFदोन संख्यांची बेरीज 17 आहे तर त्यांच्या वर्गांची बेरीज 157 आहे. त्या दोन संख्यांच्या घनांची बेरीज शोधा.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
दोन संख्यांची बेरीज 17 आहे
त्यांच्या वर्गांची बेरीज 157 आहे
वापरलेली संकल्पना:
x3 + y3 = (x + y)(x2 + y2 - xy)
(x + y)2 = x2 + y2 + 2xy
गणना:
समजा दोन संख्या x आणि y आहे
म्हणून,
(x + y) = 17 आणि (x2 + y2) = 157
आता,
(x + y)2 = 289
⇒ x2 + y2 + 2xy = 289
⇒ 157 + 2xy = 289
⇒ 2xy = 289 - 157
⇒ 2xy = 132
⇒ xy = 66
आता,
x3 + y3 = (x + y)(x2 + y2 - xy)
⇒ x3 + y3 = 17(157 - 66)
⇒ x3 + y3 = 17 × 91
⇒ x3 + y3 = 1547
∴ त्या दोन संख्यांच्या घनांची बेरीज 1547 आहे.
Last updated on Jun 11, 2025
-> RRB NTPC 2025 Exam Postponed. Railway Recruitment Board has rescheduled the RRB NTPC Exam for June 5, 2025 (Shift 3).
-> RRB NTPC Exam Analysis 2025 is LIVE now. All the candidates appearing for the RRB NTPC Exam 2025 can check the complete exam analysis to strategize their preparation accordingly.
-> The UPSC Prelims Result 2025 and UPSC IFS Result 2025 has been released @upsc.gov.in
-> The RRB NTPC Admit Card 2025 has been released on its official website.
-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here.
-> The RRB NTPC CBT 1 Exam is scheduled from 5th June to 24th June 2025 as per the revised tentative exam schedule.
-> The RRB NTPC 2025 Notification has been 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.
-> Check out the Rajasthan PTET Admit Card 2025 and UPSC Prelims Result Date 2025 here.