यदि \(x=\sqrt{7}+\sqrt{5}\), तो \(x^2\) का सही मान क्या है?
If \(x=\sqrt{7}+\sqrt{5}\), what is the correct value of \(x^2\)?
Explanation opens after your attempt
A. \(12+2\sqrt{35}\)
Concept
\(x^2=7+5+2\sqrt{35}=12+2\sqrt{35}\). In exams do not miss (2ab) in ((a+b)2).
Why this answer is correct
The correct answer is A. \(12+2\sqrt{35}\). \(x^2=7+5+2\sqrt{35}=12+2\sqrt{35}\). In exams do not miss (2ab) in ((a+b)2).
Exam Tip
\(x^2=7+5+2\sqrt{35}=12+2\sqrt{35}\) है। परीक्षा में ((a+b)2) में (2ab) न छोड़ें।
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