Here's the question:
z is a complex, and if $z^5 + z^4 + z^3 + z^2 + z + 1 = 0$ then $z^6=1$.
use this fact to calculate how many answers is there for:
$$z^5 + z^4 + z^3 + z^2 + z + 1 = 0$$
Thanks.
Here's the question:
z is a complex, and if $z^5 + z^4 + z^3 + z^2 + z + 1 = 0$ then $z^6=1$.
use this fact to calculate how many answers is there for:
$$z^5 + z^4 + z^3 + z^2 + z + 1 = 0$$
Thanks.