Add and simplify using a +bi form; (2-7i)+(3- 9i)

Add and simplify;

answer in a+bi form;

(2-7i)+ (3-9i)
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1 Answer

2+7i +3-9i...(2+3) +(7i-9i)

=5-2i

or size=5.385164807134504 & angel=-2.8014094863518 deg
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