Pammie123cakess Pammie123cakess
  • 04-06-2014
  • Mathematics
contestada

how do I solve (3+i)(3-i)

Respuesta :

kate200468
kate200468 kate200468
  • 04-06-2014
[tex] (3+i)(3-i)=3(3-i)+i(3-i)=9-3i+3i-i^2=9-(-1)=\\\\=9+1=10[/tex]
Answer Link
kayt91
kayt91 kayt91
  • 05-06-2014
(3+I)(3-1)
-i^2+9=0
-I^2=-9
I^2=9
i= + or - 3
Answer Link

Otras preguntas

The stroop effect demonstrates people's inability to ignore the ______ of words.
In the Chinese civil war 1945-1949 support for Mao Zedongs communist forces came primarily from the
Regents what was a goal of progressive era reforms such as recall, referendum, and the direct primary?
While Flinn was starting the fire, his friends were collecting firewood. Flinn has 5 sticks. If he puts 3 sticks in the fire every minute, and his friends bring
Why is the answer for #6 A?
which item below is part of the circulatory system a. kidneysb. lungsc. heart or d. stomach
The small organs used by spiders to produce silk are called _____________. silk nozzles spinnerets pedipalps mouthparts
how did white supremacists provide support for the ku klux klan
What is the elapsed time
Lisa’s test grades are 79, 89, and 90. There will be one more test this year. If Lisa wants her test average to be at least 88, what is the lowest grade she can