SOLUTION: Find m^2 + 1/m^2 if m + 1/m =9.

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Question 1162316: Find m^2 + 1/m^2 if m + 1/m =9.
Found 2 solutions by Edwin McCravy, ikleyn:
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
Find m^2 + 1/m^2 if m + 1/m = 9






Edwin
 

Answer by ikleyn(52814)   (Show Source): You can put this solution on YOUR website!
 .



If   +  = 9, 


then, squaring,  you get


     +  +  = 81,


or


     +  = 81 - 2 = 79.


ANSWER.  If   +  = 9,  then    +  = 79.





Solved, answered, explained and completed.







 

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