lilyyy16 lilyyy16
  • 02-12-2020
  • Mathematics
contestada

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

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sabrin12A sabrin12A
  • 02-12-2020
(7+21)=28

28(3-I)=

28•3 =84

28•I=28i

28/84=3,5

3,5=I
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