marialion3147 marialion3147
  • 07-11-2018
  • Mathematics
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(2+2i)(5+3i) step by step (4 steps)

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tramserran
tramserran tramserran
  • 07-11-2018

Answer: 4 + 16i

Step-by-step explanation:

  (2 + 2i)(5 + 3i)

= 2(5 + 3i) + 2i(5 + 3i)      combine the two factors by multiplication

= 10 + 6i + 10i + 6i²         distribute

= 10 + 6i + 10i + 6(-1)       substitute -1 for i²    

=  4 + 16i                         add like terms (6i + 10i)

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