SOLUTION: What is the coefficient of x^-5 in the expansion of (x^3 - 1/x^2)^10?

SOLUTION: What is the coefficient of x^-5 in the expansion of (x^3 - 1/x^2)^10?

Algebra.Com

Question 1040820: What is the coefficient of x^-5 in the expansion of (x^3 - 1/x^2)^10?
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
The binomial expansion formula as applied in this case is as follows:

=
==> 30-5k = -5 ==> -5k = -35 ==> k = 7.
Hence the coefficient of is .
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