If `[[axxb,bxxc, c xxa]]=lambda[[a, b, c]]^(2)`, then `lambda` is equal to

If [axxb bxxc c xxa]=lambda[abc]^(2) , then lambda is equal to

If [axxb bxxc c xxa]=lambda[abc]^(2) , then lambda is equal to

If [a xx b b xx c c xx a] lambda [a b c]^(2) then lambda is equal to

If [vec a xxvec bvec d xxvec cvec c xxvec a] = lambda [vec with bvec c] ^ (2) then lambda is equal to

If a + 2b - c = 0 and a xx b + b xx c + c xx a = lambda (a xx b) , then the value of lambda is equal to a)5 b)4 c)2 d)-2

If a+b+c=0, "then "axxb is equal to