haardiksharma wrote:
x^(n^2−n+2)/x^((n−2)(n+1))=?
1) n=5
2) x=2
\(\frac{x^(n^2-n+2)}{x^(n-2)(n+1)}\)
=\(\frac{x^(n^2-n+2)}{x^(n^2-n-2)}\)
=\(x^(n^2-n+2-n^2+n+2)\)
=\(x^4\)
So we only need the value of x to determine the answer.
Statement 1:
As we found out above, the value is independent of the value of n. We do not know that value of x. If x=1 then answer is 1 and if x=2 answer is 16.
Not sufficient
Statement 2:
This directly gives us the value of x and the answer will be \(2^4 =16\).
Sufficient.
Answer B
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