Posted by **George** on Sunday, March 3, 2013 at 9:16am.

find the first 3 terms in the expansion of (x+4)(1+3x)^-2 as a series in ascending powers.

I expanded the second bracket using binomial expansion and got 1 -6x +27x^2 -108x^3

how do I combine (x+4) with the expansion?

Any help would be appreciated.

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