Need help on 3 qstn.

Q1 Chapter 3.1 --- Linear Algebra 2 Points Compute the determinant of matrix A. A = OT CO CON O -1 O -19 0 1 O 19 Save Answer *Unsaved Changes Q2 Chapter 3.1 --- Linear Algebra 6 Points Compute the determinant of matrix B by co-factor expansion. N B = OT HA Please use hyper-link below to submit your work. Please select file(s) Select file(s) Save Answer Q3 Chapter 3.2 --- Linear Algebra 2 Points Compute the determinant of matrix C. C = O OH 00 N O 36 O -28 O -36 O -100