Mathematics

$i^2$= -1 is the _________ notation for the imaginary unit number.

A complex number is an expression of the form $x+yi$ where x , y ,$\in$

If $z=3+4i$ then $lm(z)$ is

If z₁= 2 + and z₂ = 4 - 3 then z₁z₂= ?

If z = 5 - 4 then $|\overline{z}|$=

If $z=(3+4i)(2-3i)$ then $|z|$

$z.\overline{z}$ = ?

If $z₁=3+7i$ and $z₂=-4+6i$ then $\frac{z₁}{z₂}$=