help me to find the below sum

Asked by armaan786 | 28th Jan, 2010, 06:37: PM

Expert Answer:

(x - 1/x)2 

x = 9 - 4 = 9-(±2) = 7 or 11

Using x = 7

(7 - 1/7)2 = 48x48/49 = 2304/49

Using x = 11

120x120/121 = 14400/121

So the answer can be, 2304/49 or 14400/121.

Regards,

Team,

TopperLearning.

Answered by  | 28th Jan, 2010, 07:01: PM

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