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

Which of the following does not change when a car keeps a constant speed but change In direction. A. Speed B. Velocity C.acceleration D.distance

Does an acid gain or lose a hydrogen cation, H+, during an acid-base reaction?

If your job requires you to use a respirator, your employer is required to do three things. What is missing from the list?

math help please please

What was the effect of the Dawes Act on the Native American tribes? 1. it gave Native Americans the means to learn and benefit from farming. 2. it provided extr

1. A 2. B 3.C 4.D which one ??

20 POINTS!!!! Review the purpose. The authors purpose is to persuade the reader that child labor is wrong. Which passage best supports this purpose? A. He phot

Passage of which of the following acts increase led tension between colonists and the British government in 1774?

An imaginary line from North to South through the earth's center is called an axis. True False Need answer ASAP!!

Find the product. (6a^2+4b)(a^2-b)