<prompt> Tafuta 2 mara 2 tumbo mathbfM kiasi kwamba mathbfM inaanzapmatrix 3 0 endpmatrix anzapmatrix 6 21 mwisho pmatrix na mathbfM anzapmatrix -1 5 mwishopmatrix anzapmatrix 3 -17 mwishopmatrix.  <response>: Kugawanya pande zote mbili za mathbfM anzapmatrix 3 0 endpmatrix anzapmatrix 6 21 endpmatrix kwa 3, tunapatamathbfM anzapmatrix 1 0 endpmatrix anzapmatrix 2 7 endpmatrix.Hii inatuambia kwamba safu wima ya kwanza ya mathbf M ni anzapmatrix 2 7 mwishopmatrix.Tangu anzapmatrix -1 5 mwishopmatrix anzapmatrix 1 0 mwishopmatrix anzapmatrix 0 5 mwishopmatrix,mathbfM anzapmatrix 0 5 mwishopmatrix anzapmatrix 3 -17 mwishopmatrix anzapmatrix 2 7 mwisho pmatrix anzapmatrix 5 -10 mwishopmatrix.Kugawanya pande zote mbili kwa 5, tunapatamathbfM anzapmatrix 0 1 endpmatrix anzapmatrix 1 -2 endpmatrix.Hii inatuambia kwamba safu wima ya pili ya mathbfM ni beginpmatrix 1 -2 mwishopmatrix.Kwa hiyo,mathbfM anzapmatrix 2 1 7 -2 mwishopmatrix. 