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 religious group is found in the western parts of eastern europe? a. roman catholics b. eastern orthodox c. muslims d. protestants

in order to assure that a policy speech acknowledges an issue, identifies a solution, and explains a plan of action, a writer should use an .

What is the purpose of the vas deferens

what is the first step needed to solve 2 over 5 multiplied by x minus 6 equals negative 16

find the balance on a deposit of $1,150 that earns 9% interest compounded annually for 2 years

Human immunodeficiency virus (hiv) is considered which type of virus? slow virus, filovirus, herpes virus, or retrovirus?

can hiv be transmitted through Having surgery on your appendix

I need help with. multiplication is there a 8 x s table trick

A thermogram identifies the warm and cool parts of an object by using a. radio waves. c. ultraviolet waves. b. microwaves. d. infrared waves.

Find the product. (-4·3·2)2 -48 48 -576 576