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 ( 36+ )
Otras preguntas
Solve for n in the inequality 3|n − 1] > 9. (If this is an "and" inequality, give your answer as a single compound inequality. If this is an "or" inequality,
Starbucks – a matter of ethics! Question 1. Encouraging Ethical Conduct: Did Johnson openly acknowledge that his decision was based in ethics and morality? Did
Mr. Lynn, an agent for Acme Insurance, Inc. thinks that, since state laws are preempted concerning the marketing of Medicare health plans, he doesn't have much
Why can the reader conclude that this e-mail was written for a general audience? it contains language that suggests that the general audience is officially conn
I usually.......(not wear) a scarf,but today I ....(wear)one because its unusually cold.
10.5 mL of an unknown solution are diluted to 80.0 mL. The concentration of the new solution was determined to be 0.172 M. What was the molarity of the unknown
write the icon of full justification
¿Cómo podemos hacer la expresión corporal?
1. Why is polyester considered to be a good material for making the sails of ships? 2. Name the component fibres of polycot, Terry wool and cots wool? 3. Why po
“How long can we ignore the obesity problem in this country? This problem is like a toothache, we can ignore it, but it is just going to get worse. I know that
