Find minors and cofactors of the elements `a_(11)," "a_(21)` in the determinant `Delta=|a_(11)a_(12)a_(13)a_(21)a_(22)a_(23)a_(31)a_(32)a_(23)|`

Question

तत्वों के नाबालिग और cofactors खोजें `a_(11)," "a_(21)` निर्धारक में `Delta=|a_(11)a_(12)a_(13)a_(21)a_(22)a_(23)a_(31)a_(32)a_(23)|`