SOLUTION: 25. solve for n if P(n,3)=2C(n,2),n € N

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Question 144803:
25. solve for n if P(n,3)=2C(n,2),n € N
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
25. solve for n if , n € N

··· (until there are R factors)





So



and



So

 

becomes:









Factor out  on left side:







Set each factor = 0



 or 

 or 

So there are three solutions, , , 

Edwin
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