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If vec(x)=(1,1,2),vec(y)=(1,2,1)" and "v...

If `vec(x)=(1,1,2),vec(y)=(1,2,1)" and "vec(z)=(2,1,1)` , then find `vec(x)xx(vec(y)xxvec(z))`

A

`(-5,5,0)`

B

`(5,5,5)`

C

`(5,0,-5)`

D

`(-5,-5,-5)`

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