cheyannebear
cheyannebear cheyannebear
  • 20-01-2017
  • Mathematics
contestada

Simplify the given expression below:

(1 + 2i) • (5 − 3i)

2 − 15i
3 + 2i
5 − 6i
11 + 7i

Respuesta :

Diana5674
Diana5674 Diana5674
  • 20-01-2017
=5-3i+10i-i
=5-6i

Ans is 5-6i

Hope I can help you (≧∇≦)
Answer Link
LilyLove2007
LilyLove2007 LilyLove2007
  • 31-08-2021

Answer:

ACTUALLYYY the other person is wrong, the answer would be D/ 11 + 7i

Step-by-step explanation:

(1 + 2i) * (5 - 3i) = 1(5 - 3i) + 2i(5 - 3i)

                          = 5 - 3i + 10i - 6i^2

                          = 5 + 7i - 6(- 1)

                          = 5 + 7i + 6

                          = 11 + 7i

Best way I can show you sorry if it doesn't make sense but its O 11 + 7i !

Answer Link

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