polynomial=-x^4+2 b x^3+(b^2-c^2+2 c) x^2+(2 b c-2 c d) x+c^2-d^2
This is good
CoefficientList[polynomial, x]
But how to get coefficient list from the PolynomialForm
?
I've tried this, but it does not give the coefficient list.
CoefficientList[PolynomialForm@polynomial,x]
CoefficientList[#[[1]], x] &@PolynomialForm@polynomial
? $\endgroup$