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

Otras preguntas

What pattern will result from plotting all points x, y that satisfy an equation in the form ax+by=c

Gregor Mendel’s research formed the basis of the field of genetics. dominance. recessiveness. selective breeding.

Make a case for the removal of Native Americans from the Western Plains to reservations.

The perimeter of a rectangle is 34 units. Its width W is 6.5 units. Write an equation to represent the perimeter in terms of the length L, and find the value

(-12)(-3) what is the answer to that?

What is your rate in miles/hour if you tun at a speed of 2.2 miles in 20 minutes

how to draw model to represent the product of 18x34

What was the purpose of the Open Door Policy?

what is log8 1/64=-2

Please help with the 4th one