यदि \(q=\sqrt{5}+2\) है, तो \(q^2-4q\) का मान क्या है?
If \(q=\sqrt{5}+2\), what is the value of \(q^2-4q\)?
Explanation opens after your attempt
A. (1)
Concept
\(q^2=9+4\sqrt{5}\) and \(4q=4\sqrt{5}+8\). Subtracting gives (1).
Why this answer is correct
The correct answer is A. (1). \(q^2=9+4\sqrt{5}\) and \(4q=4\sqrt{5}+8\). Subtracting gives (1).
Exam Tip
\(q^2=9+4\sqrt{5}\) और \(4q=4\sqrt{5}+8\) है। घटाने पर (1) मिलता है।
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