यदि (a=5) है तो \(a^2-a^{-1}\) का मान क्या है?
If (a=5), what is the value of \(a^2-a^{-1}\)?
Explanation opens after your attempt
A. \(\frac{124}{5}\)
Concept
\(5^2=25\) and \(5^{-1}=\frac{1}{5}\). Thus \(25-\frac{1}{5}=\frac{124}{5}\).
Why this answer is correct
The correct answer is A. \(\frac{124}{5}\). \(5^2=25\) and \(5^{-1}=\frac{1}{5}\). Thus \(25-\frac{1}{5}=\frac{124}{5}\).
Exam Tip
\(5^2=25\) और \(5^{-1}=\frac{1}{5}\) है। इसलिए \(25-\frac{1}{5}=\frac{124}{5}\) है।
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