# What is the constant term of the expansion of ((x-(2/x^2))^9?

${\left(x - \frac{2}{x} ^ 2\right)}^{9} = - \frac{512}{x} ^ 18 + \frac{2304}{x} ^ 15 - \frac{4608}{x} ^ 12 + {x}^{9} + \frac{5376}{x} ^ 9 - 18 {x}^{6} - \frac{4032}{x} ^ 6 + 144 {x}^{3} + \frac{2016}{x} ^ 3 - 672$
Hence the constant term is $- 672$