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 ( 54+ )
Otras preguntas
Customer account numbers for a certain company consists of 3 letters followed by 5 numbers how many different account numbers are possible if repetitions of let
mary incests £12000 in a savings account. The account pays 1.5% compound interest per year
What is the probability that she picks a red marble then a green then a blue or orange if there are 75 blue 50 green 100 orange and 25 red
Complete the square for each expression. Write the resulting expression as a binomial squared 5. x^2+14x+? 6. x^2-12x+? 7. x^2-9x+?
7(3x-2)+4=95if you are really smart at math please help right away
Erin has a house. The length is 15 ft., the height is 12 ft. and the width is 7ft. what is the area?
How does a merit system improve the government?
What is a theme in “riding the bus with my sister” ??
Please help i will mark as brainliest
Question 1 (3 points) The fish in the ocean are an example of
