Question
Download Solution PDF64x3 + 36x2y + 24xy2 + 2y3 का मान क्या है, जब x = 3 और y = -4 है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFप्रयुक्त सूत्र:
(A + B)3 = A3 + 3A2B + 3 AB2 + B3
गणना:
64x3 + 36x2y + 24xy2 + 2y3
⇒ 64x3 + 48 x2y + 12xy2 + y3 - 12x2y + 12xy2 + y3
⇒(4x + y)3 + y3 - 12xy(x - y)
⇒ (4 × 3 - 4)3 + (-4)3 - 12(3)(-4)[3 - (-4)]
⇒ 512 - 64 + 1008 = 1456
∴ सही विकल्प 2 है।
Last updated on Jul 19, 2025
-> The SSC CGL Notification 2025 has been announced for 14,582 vacancies of various Group B and C posts across central government departments.
-> CSIR NET City Intimation Slip 2025 has been released @csirnet.nta.ac.in.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025 in multiple shifts.
-> Aspirants should visit the official website @ssc.gov.in 2025 regularly for CGL Exam updates and latest announcements.
-> Candidates had filled out the SSC CGL Application Form from 9 June to 5 July, 2025. Now, 20 lakh+ candidates will be writing the SSC CGL 2025 Exam on the scheduled exam date. Download SSC Calendar 2025-25!
-> In the SSC CGL 2025 Notification, vacancies for two new posts, namely, "Section Head" and "Office Superintendent" have been announced.
-> 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, with the age limit varying from post to post.
-> The SSC CGL Salary structure varies by post, with entry-level posts starting at Pay Level-4 (Rs. 25,500 to 81,100/-) and going up to Pay Level-7 (Rs. 44,900 to 1,42,400/-).
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.