Pammie123cakess Pammie123cakess

04-06-2014
Mathematics

contestada

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

Respuesta :

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

05-06-2014

(3+I)(3-1)
-i^2+9=0
-I^2=-9
I^2=9
i= + or - 3

Answer Link

Otras preguntas

36 is _______% less than 60?

how have computers changed mapmaking in recent years

3 ( 4d + 1 ) - 9d = 6 - 2d

on sara's computer, 3/8 of the hard drive is files. Of the files, 1/6 are games . What part of the hard drive is games?

A light plane flew from its home base to an airport 255 miles away. With a head wind, the trip took 1.7 hours. The return trip with a tail wind took 1.5 h

What were the 4 major truths Jefferson presented in the declaration of independence?

What's breed of given cat???Check attachment

how have computers changed mapmaking in recent years

Your model locomotive is 18 inches long. It is an exact model of a locomotive that is 72 feet long. A window on the locomotive is how many times wider than a wi

how have computers changed mapmaking in recent years