Question

(3x+1/X)^10

Answer 1

what are you supposed to do, expand?

Answer 2

yup

Answer 3

This is an occurence of Pascals triangle.
It looks like this:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 5 1
1 6 15 6 1
1 7 21 21 7 1
and so on. Each extra line is the next coefficient for x.
So if you do the expansion, you will get the following:
59049x^10 + 196830x^9/x + 295,245x^8/x^2 + 262440x^7/x^3 + 153090x^6/x^4 + 61236x^5/x^5 + 17010x^4/x^5 + 3240x^3/x^7 + 405x^2/x^8 + 30x/x^9 + 1/x^10

Hope this helps. If it does, please choose good answer.
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