<prompt> Tafuta bidhaa mtambuka ya anzapmatrix 1 -1 2 mwishopmatrix na anzapmatrix 3 4 -5 endpmatrix.  <response>: Bidhaa mtambuka ya beginpmatrix 1 -1 2 endpmatrix na beginpmatrix 3 4 -5 endpmatrix nianzapmatrix -1-5 - 42 23 - -51 14 - 3 -1 mwishopmatrix anzapmatrix -3 11 7 mwishopmatrix. 