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

The electoral college makes the decision of electing the ? of the united states.

What is the exact area of the circle having a radius of 11 miles?

dries van wijhe skated 200 km at an average speed of 35.27 km/h. how long was he skating?

Obesity is defined as being thirty percent over the recommended weight. true false

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

the sum of two numbers is 5000. if 20% of one number is equal to 30% of other no. find the number

75 cents/hr 24 hours a day

The table below shows the number of hours some business people in two states spend in meetings each week: State A 21 23 24 22 24 25 23 23 22 State B 24 22 20

Which essential nutrients have the highest calories per gram?

bob has three times as many baseball cards as bill. together they have a total of 68 cards. how many cards does bob have?