1 2 3 4 3 Calculate the determinant of A = 1 -2 -4 6. -2 -2 -3 4 using cofactor expansion on the first row. 3.

Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 2-2 5 5 3 2 5 -3 3 لنا Write the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below. OA. Using this expansion, the determinant is (2)(1)-(-2)(31)+ (5)(34). OB. Using this expansion, the determinant is (2)(-19)-(-2)(-21) + (5)(16). OC. Using this expansion, the determinant is (2)(-19) + (-2)(-21) + (5)(16). OD. Using this expansion, the determinant is (2)(1) + (-2)(31)+ (5)(34).

Evaluate the determinant of the matrix A by a cofactor expansion along a row or column of your choice. -2 -3 -4 -57 5 3 2 A = 2 4 5 -5-4-3-2 det(A)= i د و تمام

Fill in the blanks with appropriate numbers to calculate the determinant. (a) 9 - • 4 = %3D 1 -1 -3 (b) = ? v1 : O: -3) = 3 -4 1 • 0 - • 2) 3 . -3) • 1 - 2