If $\omega(\neq 1)$ is a cube root of unity, and $(1+\omega)^{7}=A+B\omega$. Then $(A,B)$ equals (1) $(1,1)$ (2) $(1,0)$ (3) $(-1,1)$ (4) $(0,1)$
If $\omega(\neq 1)$ is a cube root of unity, and $(1+\omega)^{7}=A+B\omega$. Then $(A,B)$ equals\\
(1) $(1,1)$\\
(2) $(1,0)$\\
(3) $(-1,1)$\\
(4) $(0,1)$