Question

please solve class 12​

Answer 1

Answer:

x²+89+=67×m²

(m²-p⁸=mp²⁸)

Answer 2

Let A = [aij] be a square matrix of order 3 x 3 and |A|= -7. Find the value of a11A21 + a12A22 + a13A23 where Aij is the cofactor of element aij.Read more on Sarthaks.com - https://www.sarthaks.com/968792/let-square-matrix-order-find-the-value-a11a21-a12a22-a13a23-where-aij-the-cofactor-element

Step-by-step explanation:

The value of a11A21 + a12A22 + a13A23 is 0Read more on Sarthaks.com - https://www.sarthaks.com/968792/let-square-matrix-order-find-the-value-a11a21-a12a22-a13a23-where-aij-the-cofactor-element