math1818
math1818
21-08-2017
Mathematics
contestada
7-4i divided by
2+i
how to solve it?
Respuesta :
Banabanana
Banabanana
21-08-2017
[tex] \cfrac{7-4i}{2+i}\\\\ = \cfrac{(7-4i)(2-i)}{(2+i)(2-i)} \\\\ =\cfrac{14-7i-8i-4}{4+1} \\\\= \cfrac{10-15i}{5} \\\\= \cfrac{5(2-3i)}{5} \\\\=2-3i[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 81+ )
Otras preguntas
Write the ratio of the length to the width of a picture that is 10 1/2 inches long and 8 3/4 inches wide
Which of the following is not a true statement regarding the writing process? A. It can be used to develop any type of writing. B. It can guide the author from
i need help!! i need 15 questions in spanish i can ask someone to get to know them better, but not ovbiosu ones like whats your name, but questions that are mor
You are downloading a song. The percent y(in decimal form) of megabytes remaining to download after x seconds is y=-0.1x+1. Interpret the x- and y- intercepts.
You are downloading a song. The percent y(in decimal form) of megabytes remaining to download after x seconds is y=-0.1x+1. Interpret the x- and y- intercepts.
What is 24/40 in simplest form
how does hydrogen ion change into hydrogen atom plz answer as fast as you can
You should avoid the overuse of exclamation points because you'll appear to be A. shouting at the reader. B. showing off. C. exhibiting bias. D. creating confus
What mark did tom walker find when he reached home
Find each sum or difference 10 1/8 + 3 3/4
