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 ( 41+ )
Otras preguntas
what helped make the content of Roosevelt's four freedom speech timeless and relevant to future generations
Suppose a homeless shelter provides meals and sleeping cots to those in need. A rectangular cot measures 6 feet long by 3 ½ feet wide. Find the cot's diagonal d
One of the functions of the respiratory system is to rid the body of co2. Where does the co2 come from?
Identify each judgment below as ethical (E), or as aesthetic (A), or as legal (L) in nature, or as a matter of custom (C): That is a worthless piece of art beca
If (3, y) lies on the graph of y = -(2x), then y = 1/8 -6 -8
CAN SOMEONE PLEASE help with this worksheet or westward expansion I AM SO LOST AND I NEED TO GO TO BED PLEASE HELP ILL GIVE U 20 POINTS
The concept that suggests that your roommate is more likely to become your friend than a person ten blocks away is known as
A nerve poison that blocked neurotransmitter receptors on the dendrites would __________. inactivate the enzyme that degrades the neurotransmitter cause continu
please help with this bio question
The social benefit of a given level of a public good is the vertical sum of all private benefits for that level. True or false?
