Evaluate `A=|(2,-3,-5),(6,0,4),(1,5,-7)|`Also find minor and cofactor of elements in the 2nd row of determinant and verify`-a_21C_21+a_22C_22+a_23C_23=value of A` where `C_21,C_22,C_23 are cofactors of a_21,a_22,a_23`