The system of equations Kx+y+z=1, x+Ky+z=K and x+y+Kz= have no solution if K is equal to?
0
1
-1
-2
for no solution
K(K2-1)-1(K-1)+1(1-K)=0
K(K-1)(K+1)-2(K-1)=0
(K-1)(K2+K-2)=0
(K-1) (K+2) (K-1) =0
Option 1)
0
This solution is incorrect
Option 2)
1
This solution is incorrect
Option 3)
-1
This solution is incorrect
Option 4)
-2
This solution is correct