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If y=x^m, then yn is equal to: A) ((m!...

If `y=x^m`, then `y_n` is equal to:
A) `((m!)/(m-n!))x^(m-n)`
B) `((m!)/(n-m!))x^(m-n)`
C) `((n!)/(m+n!))x^(m+n)`
D) `((n!)/(n-m!))x^(n-m)`

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