Question

find the value of given determinants ​

Answer 1

Answer:

FINDING THE DETERMINANT OF' A MATRIX

Multiply each element in any row or column of the matrix by its cofactor. The sum of these products gives the value of the determinant. The process of forming this sum of products is called expansion by a given row or column.

Answer 2

Answer:

Value of the given determinant, D

= (7) {(-1)(1) - (4)(2)} - (0) {(5)(-1) - (-3)(2)} + (8) {(5)(4) - (-3)(1)}

= 7 × (-9) - 0 + 8 × (23)

= (-63) + 204

= 141

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