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 ( 92+ )
Otras preguntas
Can someone answer for me please, if you're great at math. The equation sin (35o) = 12/c can be used to find the length of AB. What is the length of AB? Round
Ughhhhhhhhhhhhhhhh help me please
which of the following qualities apply to a flat character
how can citations lend credibility to your work a. they show that you have done the necessary research to back up your thesis b. they show that researchers have
Every 6 months Reuben lopez puts 420$ into an account paying 10% compounded semiannually. Find the account balance after 15 years.
Some fabrics build up more charge than others because ______. 1.they are better insulators 2.they are worse insulators 3.they are better conductors 4.none of th
During ecological succession, how does the growth of young hardwoods affect the organisms living in a an ecosystem?
Express the polynomial −4p + 3p + 2p2 in standard form and then classify it.
How do you think greenhouse gas emissions and global climate will change during the next 50 years? If greenhouse gas emissions and global temperatures continue
POINTS POINTS POINTS!!! PLS HELP QUICKLY!!! SIMPLE MATH!! The function g is defined by g(x)=9k−4, where k is a constant. Find k, if the graph of g passes throug
