SOLUTION: Find the fourth term without expanding the complete expression. (9/x + x/9)^7

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Question 382102: Find the fourth term without expanding the complete expression.
(9/x + x/9)^7
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Depends on how you expand the expression. It will most likely be
7C3 (9/x)^4 (x/9)^3 = 7C3(9/x) = 315x