Seudónimo
Seudónimo
01-02-2016
Mathematics
contestada
(3-5i)(2+9i)+(7+2i)(7-2i)
Respuesta :
Benjamin16
Benjamin16
01-02-2016
[tex]i^{2} = -1[/tex]
-----------------------------------------
[tex](3-5i)(2+9i)+(7+2i)(7-2i) = \\ \\ = 6 + 27i - 10i - 45i^{2} + 49 - 14i + 14i - 4i^{2} = \\ \\ =55 + 17i + 45 + 4 = \boxed{104 + 17i} [/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 74+ )
Otras preguntas
What is the theme of the poem sick by shel silverstein?
Solve by elementation -4x-3y=-14 12x+5y=2 Show work or explain cause I don't understandddd
What kind of ecological succession is more likely to arise following a fire?
Sarah just completed her 1040EZ tax return form and double-checked it. Now she should _____. send it to her employer send it to the IRS before April 15th comple
I ran 13 miles in 2 1/4 hours. What was my average speed? (It has to be done using proportions) I don't need the answer, I need to know how to do it, and if you
In what way is the constitution more flexible than the articles of confederation?
-3(y+3) = 2y + 3 Please show your steps!
Can you please help me solve these problems.
A doctor notices that a patient is having difficulty absorbing nutrients. Which structure is most likely involved in the patients problem? Intestines Pharynx Es
Exercise can help prevent heart disease but once you've had a heart attack, it's too late for exercise to help you.
