एक वर्ग मॉडल में \(m^2+2mn+n^2=196\) है। यदि बाहरी भुजा (m+n) धनात्मक है, तो (m+n) क्या होगा?
In a square model, \(m^2+2mn+n^2=196\). If the outer side (m+n) is positive, what is (m+n)?
Explanation opens after your attempt
A. (14)
Concept
(m-2+2mn+n-2=(m+n)2) and the square root of (196) is (14). Exam tip: take the square root of the whole model.
Why this answer is correct
The correct answer is A. (14). (m-2+2mn+n-2=(m+n)2) and the square root of (196) is (14). Exam tip: take the square root of the whole model.
Exam Tip
(m-2+2mn+n-2=(m+n)2) है और (196) का वर्गमूल (14) है। परीक्षा में पूरे मॉडल का वर्गमूल लें।
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