## Multiplication

To multiply two complex numbers, we use distributive low and the fact $$i^{2}=-1$$ Let $$z_{1}=a+bi$$ and $$z_{2}+c+di$$ be two…

## Working with i

The imaginary unit $$i$$ satisfies $$i^{2}=-1$$ . That is, $$i=\sqrt[]{-1}$$ . The powers of $$i$$ can be…