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.
Finding Perfect Squares
Remove all the words that end with "ain"
Make one big string out of two smaller strings
Back to basics 15 - classes
Find out missing number from a vector of 9 elements
Outer product of multiple vectors
Find all vampire fangs
Multivariate polynomials - emulate symbolic form
Negation the hard way
Multivariate polynomials - convert monomial form to array
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