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  4. If z1=2+3 i and z2==3-2 i, then z1-z2 is equal to

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Q. If $z_1=2+3 i$ and $z_2==3-2 i$, then $z_1-z_2$ is equal to

Complex Numbers and Quadratic Equations

Solution:

Here, $z_1=2+3 i, z_2=3-2 i$, then
$z_1-z_2 =2+3 i-(3-2 i) $
$=2+3 i-3+2 i $
$ =-1+5 i$