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 ( 57+ )
Otras preguntas
please help me solve this
Where is the blue dot on the number line?
Describir con tus palabras las características geográficas de los asentamientos fenicios. ¿Cómo influyó está geografía en el desarrollo de las actividades econó
Here is a train table: Newport: 04:58. 13:32 Shrewsbury: 07:22 A) How long is the journey from Newport to Shrewsbury if you catch the 04:58 train? B) The 13:32
Ioana has three ropes whose lengths are 39 inches, 52 inches and 65 inches. She wants to cut the ropes into equal length pieces for magic tricks. No rope is to
could someone please help me asap
50:31 Which of the following factors might be affected by a wildfire? a. food b. shelter c. biodiversity d. all of the above
\According to one ancient Jain text, the original group of Mahavira’s followers a. was composed mostly of women b. were primarily Buddhists c. believed that Mah
The core characteristics of each individual that cannot be changed is called the ___ dimensions of diversity: primary secondary tertiary qu a
Work out the size of the interior angle of a regular 16-sided polygon
