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Diano4ka-milaya [45]
3 years ago
10

If (x + yi) + (2(x + yi) + 3i) = 9, what is x + yi?

Mathematics
1 answer:
lianna [129]3 years ago
5 0
The expression simplifies to 
3(x+yi) +3i =9
x+yi =(9-3i)/3
<span>x+yi= 3-i </span>
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