Answer:
2(cos(180°) + i·sin(180°))
Step-by-step explanation:
The point -2 in the complex plane is on the negative real axis. The angle that makes with the positive real axis is 180°. The point is 2 units from the origin, so the desired form of the number is ...
(units from the origin)(cos(angle) + i·sin(angle))
= 2(cos(180°) +i·sin(180°))
