UPSC Exam > UPSC Questions > a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2...
Start Learning for Free
यदि a (x+y) = b (x-y) = 2ab, तो 2(x2 + y2) का मान क्या होगा?
- a)2 (a2-b2)
- b)2(a2 + b2)
- c)4 (a2 –b2)
- d)4(a2 + b2)
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (...
दिया गया है: a (x + y) = b (x - y) = 2ab
इसलिए, a (x + y) = 2ab
अथवा (x + y) = 2b
दोनों पक्षों का वर्ग करने पर, हमें प्राप्त होता है:
(x + y)2 = (2b)2
अथवा x2 +y2 +2xy = 4b2
इसी प्रकार , (x - y) = 2a
दोनों पक्षों का वर्ग करने पर, हमें प्राप्त होता है:
(x - y)2 = (2a)2 अथवा x2 + y2 - 2xy = 4a2
समीकरण (i) और (ii) को जोड़ने पर, हम प्राप्त करते हैं:
2x2 + 2y2 = 4a2 + 4b2 अथवा 2(x2 + y2) = 4 (a 2+ b2)
इसलिए, a (x + y) = 2ab
अथवा (x + y) = 2b
दोनों पक्षों का वर्ग करने पर, हमें प्राप्त होता है:
(x + y)2 = (2b)2
अथवा x2 +y2 +2xy = 4b2
इसी प्रकार , (x - y) = 2a
दोनों पक्षों का वर्ग करने पर, हमें प्राप्त होता है:
(x - y)2 = (2a)2 अथवा x2 + y2 - 2xy = 4a2
समीकरण (i) और (ii) को जोड़ने पर, हम प्राप्त करते हैं:
2x2 + 2y2 = 4a2 + 4b2 अथवा 2(x2 + y2) = 4 (a 2+ b2)
Attention UPSC Students!
To make sure you are not studying endlessly, EduRev has designed UPSC study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in UPSC.
|
Explore Courses for UPSC exam
|
|
Top Courses for UPSCView all
a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer?
Question Description
a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer?.
a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer?.
Solutions for a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer?, a detailed solution for a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice a (x+y) = b (x-y) = 2ab, 2(x2 + y2) ?a)2 (a2-b2)b)2(a2 + b2)c)4 (a2 –b2)d)4(a2 + b2)Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice UPSC tests.
|
|
Explore Courses for UPSC exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup