SOLUTION: Simplify the expression: (n!)�-(n-1)!n!/(n-1)!n!

Question 1043206: Simplify the expression: (n!)�-(n-1)!n!/(n-1)!n!
Answer by ikleyn(52778) (Show Source): You can put this solution on YOUR website!
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Simplify the expression: (n!)�-(n-1)!n!/(n-1)!n!
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Let us start with the numerator.

 =  = n!*(n-1)!.


Did you noticed that it is exactly the denominator?

The answer is: 1.

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