bianca0668 bianca0668
  • 22-01-2021
  • Mathematics
contestada

Which expression is equivalent to (7 + 2i)(-3 - 4i)?
A 13+34i
B -13 - 34i
C -29 - 34i
D 29 + 34i

Respuesta :

manlo31 manlo31
  • 22-01-2021
B -13 -34i

(7 + 2i)(-3 - 4i)
Take the 7 then times it buy the second bracket 7x(-3-4i) then take 2i from the first bracket and times it with the second bracket 2ix (-3-4i)

Then keep simplifying
Answer Link

Otras preguntas

How were Ares and Zeus related?
find the slope and y-intercept of y=-4x-9
Which muscle encircles the eye?
CFC stands for what?
what is the power input needed for 70kg person to go up 5 m of stairs in 2 seconds
Which two countries were in conflict because they both tried to settle in the Upper Ohio River Valley? (Points : 1) France and Spain Spain and Portugal France a
Which are the four most abundant components of the atmosphere? Taken together, about what percent of the atmosphere do these four components make up?
What is the derivative of y=ln(sec(x)+tan(x))y=ln(sec(x)+tan(x))?
Nikita built a dollhouse in the shape of a rectangular prism. The base of the dollhouse has an area of 12 square feet. If the volume of the dollhouse is 48ft3,
what is 4x-6y=12 and -2x+3y=-6 in slope intercept form