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

find the sum 1/5+3/8

What is the solution to the inequality? 5x + 8 > –12 A. x < –4 B. x > –4 C. x < 4 D. x > 4

what is the relationship between thermal energy and conduction convection and radiation

Trichinella spiralis the worm that causes trichinosis is a what kind of worm

Please write a letter to a friend. In this letter, you will describe artificial selection, genetic engineering, and cloning. You will tell the friend why you

Which of the following sentences contains a compound subject? A. The three branches of the U.S. government are legislative, executive, and judicial. B. The Su

Which decimal number is equivalent to 4/5? 0.4 0.04 0.8 0.08

Which of the following is another way to represent 5 2/6? 6 8/6 5 6/8 4 12/6 4 8/6

What are the inventions of George Ohm or his commonly known name as Ohms Law

Which city is located at 36º N, 52º E? A. Cairo B. Istanbul C. Tehran D. Jerusalem