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Q.
If $z_1$ and $z_2$ are two complex numbers, then $\frac{z_1}{z_2}$ where $z_2 \neq 0$, is equal to
Complex Numbers and Quadratic Equations
Solution:
Given, any two complex numbers $z_1$ and $z_2$, where $z_2 \neq 0$.
Then, quotient $\frac{z_1}{z_2}$ is defined as
$\frac{z_1}{z_2}=z_1\left(\frac{1}{z_2}\right)=z_1\left(z_2^{-1}\right)$