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 ( 14+ )
Otras preguntas
which level is just below organs in complexity?
After you file your complaint and have the summons issued, a copy of the summons and complaint must be
Samira needs 22 quarts of lemonade to fill a dispenser. She plans to buy 7 jugs of lemonade. Each jug contains 3.3 quarts. Is this a reasonable plan?A . No, it
which of the following best completes the diagram above?
1. Malia thinks she and her friends should sell the wristbands for $2.50 each. She sells 4 wristbands on the first day of the fundraiser. a. How can the amount
CHEMISTRY QUESTION WILL MARK YOU BRAINLIEST! Based on Boyle's law, which of the following statements is true for an ideal gas at a constant temperature and mole
Find the maximum value of the function for the polygonal convex set determined by the given system of inequalities
consider the inequality-5(x+7)<-10 write an inequality representing the solution for x
Heeeeeeeeeeeeeeeeeeeeeeeeelp
Many industries rely on coal production. Among the fossil fuels, coal is the most widely used fuel in
