sum of a matrix of monomials

I have a 50 by 80 matrix of monomials and i want to sum the columns of each row so that i can have a 50 by 1 matrix.Any help?

Answer 1

[Andrei Bobrov]

sum(A,2); % A - your 'matrix of monomials'

[sasso samer]

I did this and it gave me an error

Error using  +  (line 94)

Cannot add vectors or matrices with incompatible dimensions.

Error in monomial/sum (line 32)
    s = s + varargin{k};