If z = 2-I, then (Z -) + 10 / Z= (Z -) is actually trying to hit Z with a cross

There's a cross over Z that's a conjugate complex number
The imaginary part is opposite
z-=2+i
(2+i)+10/z
=(2+i)+10/(2-i)
=2+i+2(2+i)
=3(2+i)
=6+3i
The title is ambiguous
If I am wrong, please point out,

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