The sorted coefficients in your example should be [1; 4; 3; -2].
The test suite is also comparing against an incorrect result in the last problem.
Arrange Vector in descending order
System of equations
Solve the set of simultaneous linear equations
Operate on matrices of unequal, yet similar, size
Multivariate polynomials - overload multiplication
Find all vampire fangs
Product of two multivariate polynomials
Multivariate polynomials - convert monomial form to array
Outer product of multiple vectors
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