SOLUTION: pls show how is (n)!.(n+2)=(n)!+(n+1)!

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Question 634501: pls show how is (n)!.(n+2)=(n)!+(n+1)!
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
show how is (n)!.(n+2)=(n)!+(n+1)!
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Expand the right side.
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n!(n+2) = n!+(n+1)*n!
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Factor the right side.
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n!(n+2) = n![1+n+1]
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Simplify:
n!(n+2) = n!(n+2)
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Cheers,
Stan H.