Solve this

Feb 2020
2
0
Peoria il
Given z = 3 + 5i and w = -5 + i, evaluate z - w.
 

romsek

Math Team
Sep 2015
2,875
1,608
USA
Oh come on, it's just subtraction.

Just pair up the real and imaginary parts and subtract them from each other.
 
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romsek

Math Team
Sep 2015
2,875
1,608
USA
$w =-5+i\\
z = 3+5i\\

z-w = (3+5i) - (-5+i) = \\

3-(-5) + i(5-1) = \\

8 + 4i
$
 
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