SOLUTION: Find the term independent of x in the expansion of (1+x+x^-3)^7.

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Question 1013236: Find the term independent of x in the expansion of (1+x+x^-3)^7.
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The only term without an x in it will be the linear term, 1.