Question

sing a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column.StartAbsoluteValue Start 3 By 3 Matrix 1st Row 1st Column 6 2nd Column negative 6 3rd Column 9 2nd Row 1st Column 9 2nd Column 3 3rd Column 6 3rd Row 1st Column 3 2nd Column 9 3rd Column negative 3 EndMatrix EndAbsoluteValueWrite the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below.A.Using this​ expansion, the determinant is ​(6​)(negative 63​)plus​(negative 6​)(negative 45​)plus​(9​)(72​).B.Using this​ expansion, the determinant is ​(6​)(45​)plus​(negative 6​)(99​)plus​(9​)(90​).C.Using this​ expansion, the determinant is ​(6​)(negative 63​)minus​(negative 6​)(negative 45​)plus​(9​)(72​).

Answer 1

The answer is 32.51^-3