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Ierofanga [76]
3 years ago
9

What is the value of (7 +21)(3 - i)?

Mathematics
1 answer:
omeli [17]3 years ago
8 0
(7+21)=28

28(3-I)=

28•3 =84

28•I=28i

28/84=3,5

3,5=I
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