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mrs_skeptik [129]
3 years ago
13

Helppp I just need it to be explained. #7

Mathematics
1 answer:
IceJOKER [234]3 years ago
5 0
#7 is the easiest one.

a + bi = -9 + 4i

see the expression on either side matches up so..
 a = -9 and b = 4
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