nicolasdockeryp4jgv5 nicolasdockeryp4jgv5
  • 22-02-2018
  • Mathematics
contestada

how do i solve this complex number (-3i)(-5i)(6+i)

Respuesta :

jcherry99
jcherry99 jcherry99
  • 22-02-2018
First combine the 3i and 5i. They are multiplied.
3*5 * i*i
i*i = - 1
3*5 = 15
This much is - 15

Now use the distributive law.
-15 * (6 + i)
-90 - 15i

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