If 1, omega , (omega)^2 are the cube ro...

If 1, `omega` , `(omega)^2 ` are the cube roots of unity, then `frac{1}{1+2(omega)}+frac{1}{2+omega}-frac{1}{1+omega} = `

A

`A.1`

B

`B.omega`

C

`C.(omega)^2`

D

`D.0`

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