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 ( 28+ )
Otras preguntas
In which form of government do delegates speak on behalf of citizens? popular sovereignty authoritarian monarchy representative totalitarian
Identify two different habitats in a prairie ecosystem.Name one organism found in each habitat.
which conclusion about the meaning Of Y is correct if the allele combination Yy is for yellow seeds?
A sample of helium gas is in a sealed, rigid container. What occurs as the temperature of the sample is increased?
In their theories about government, Locke and Hobbes agreed that __________. a. citizens are not required to give up any individual rights c. citizens and their
round 76340 to the nearest thousand
which conclusion about the meaning Of Y is correct if the allele combination Yy is for yellow seeds?
The Sino-Japanese War exposed military weakness in A. China. B. Japan. C. Korea. D. Russia.
Why are trees considered to be producers? A. they do not need food to survive in an ecosystem B. they depend on consumers to help them make their food C. they g
how does arachne feel about her weaving skill
