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 ( 26+ )
Otras preguntas
Find the value of y in the diagram below. -133 -80 -64 -127 Please help, will give brainliest.
HELP NEEDED I need some help here can anyone help please? Which equation below expresses 9 - 3 rewritten as an addition problem? -3-9 9 + -3 3 + -9 9+3 1 point
write the number 4.8 in scientific notation
31. Which is NOT typical of MOST igseous sock large amount of pores betwees orystals b. interlocking crytals c. formed by oryitallization from s magm d. Actuall
will give crown things please help me and be sure its the right answer A rabbit's fur grows at the rate of 5/2 inches per month. How many months will it take
Example of two noun phrase and two propositional phrase?
Based on the figure below, what type of polarity would you expect to find in the next epoch? A. Normal B.oceanic C.hydrothermal D.reversed
6. The "why of where" refers to A. geography's emphasis on landscape features B. spatial patterns on the landscape C. a definition of geography that is simply l
If the capacity of the lungs of an adult were 3.8 L, how many moles of air would the lungs contain at body temperature and atmospheric pressure?
How would I complete these pages I’m kinda lost
