type(obj) = <type 'sage.matrix.matrix_generic_dense.Matrix_generic_dense'>
version = 3.4.rc1
obj =
'[    x^2 + 12*x + 2   4*x^2 + 13*x + 8]
[ 22*x^2 + 2*x + 17 19*x^2 + 22*x + 14]'
