Question

in detrminant

17. If 3A =
[x 2 2 in second row 2 1 y in third row 2 z 1] if AA^-1 =i then( X , y, z ) ,(a) (1,2,2)
(b) 4.2,-2)
(e) (1.-2.2)
(dy (1, -2,-2)​

Answer 1

Answer:

a ) (1,2,2).

is the answer