( \frac{(n+2)!}{n!}+\frac{n!}{(n-2)!} ) का सरल रूप क्या है?
What is the simplified form of ( \frac{(n+2)!}{n!}+\frac{n!}{(n-2)!} )?
Explanation opens after your attempt
Correct Answer
B. \(2n^2+2n+2\)
Concept
The first term is ((n+2)(n+1)) and the second is (n(n-1)). Adding gives \(2n^2+2n+2\).
Why this answer is correct
The correct answer is B. \(2n^2+2n+2\). The first term is ((n+2)(n+1)) and the second is (n(n-1)). Adding gives \(2n^2+2n+2\).
Exam Tip
पहला पद ((n+2)(n+1)) और दूसरा (n(n-1)) है। जोड़ने पर \(2n^2+2n+2\) मिलता है।
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