LondanS451932 LondanS451932
  • 03-11-2022
  • Mathematics
contestada

how do I solve (-2+5i) (4-i) +(2-i)

Respuesta :

KeelinJ551368 KeelinJ551368
  • 03-11-2022

Given:

[tex](-2+5i)(4-i)+(2-i)[/tex]

Using the distributive property for the multiplication then combine the like terms

so, the given expression will be:

Note: i² = -1

[tex]\begin{gathered} (-2+5i)(4-i)+(2-i) \\ =-2(4-i)+5i(4-i)+(2-i) \\ =-8+2i+20i-5i^2+2-i \\ =-8+2i+20i+5+2-i \\ =(-8+5+2)+(2i+20i-i) \\ =-1+21i \end{gathered}[/tex]

So, the answer will be:

[tex]-1+21i[/tex]

Answer Link

Otras preguntas

Which of the following forms of communication has the most impact during your interview?
What is the main difference between a cell nucleus and a nucleoid?-A. Presence or absence of a surrounding membraneB. Arrangement of the cytoskeletonC. Back and
Or this please ? 35 points
anyone know the answer to this one too​
I need help with this
The product of the slopes of two non-vertical perpendicular lines is always -1. It is NOT possible for two perpendicular lines to both have a positive slope be
Which speaker would most clearly have supported the Marshall Plan?
There is a circular path around a sports field. Sonia takes 18 minutes to drive one round of the field, while Ravi takes 12 minutes for the same. Suppose they b
By combining what you enjoy with what you are good at, you will be able to start: A. interviewing for jobs. B. understanding your achievements. C. researching w
Ustedes _________ miran la televisión. (1 point) Question 8 options: 1) nada 2) nunca 3) nadie