Polynomial.partialFraction

Please, can somebody do this in VB NET or C#

// (x^2 + 3x)/((x + 1)(x^2 - 2x + 1)) --> (-1/2)/(x+1) + (1/2 + (3/2)x)/(x^2-2x+1)
Polynomial.partialFraction x (x**2+3
x) [x+1; x**2-2*x+1] // (0, [-1/2; 1/2 + (3/2)*x])

When I try, I do not know how introduce denominatorsFactors

Thanks very much

Julian8a

I already have the answer.
FS_list = ListModule.OfSeq(CS_list)

I am a beginner in all of this.
Thanks