Question

Calculați :z1+z2 și z1-z2pt: z1=6-3i z2=-5+4i

Answer 1

z1+z2=6-3i-5+4i=1+i
z1-z2=6-3i+5-4i=11-7i

Answer 2

$z_{1} = 6 - 3i \\ z_{2} = - 5 + 4i$
$z_{1} + z_{2} = 6 - 3i - 5 + 4i = 1 + i$
$z_{1} - z_{2} = 6 - 3i + 5 - 4i = 11 - 7i$
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