CorinthiaQ502960 CorinthiaQ502960
  • 03-11-2022
  • Mathematics
contestada

Find the product of these complex numbers.(8 + 6i)(-5 + 7i) =A.-82 - 86iB.-82 + 26iC.2 + 26iD.2 - 86i

Find the product of these complex numbers8 6i5 7i A82 86iB82 26iC2 26iD2 86i class=

Respuesta :

YafetP290768 YafetP290768
  • 03-11-2022

Solution

Step 1:

Write the expression:

(8 + 6i)(-5 + 7i)

Step 2:

[tex]\begin{gathered} \left(8+6i\right)\left(-5+7i\right) \\ \\ 8\times(-5)\text{ + 8 }\times7i\text{ + 6i }\times(-5)\text{ + 6i }\times\text{ 7i} \\ \\ =\text{ -40 + 56i - 30i + 42i}^2 \\ \\ =\text{ -40 + 26i - 42} \\ \\ =\text{ - 82 + 26i} \end{gathered}[/tex]

Final answer

B.

-82 + 26i

Answer Link

Otras preguntas

ame Select all the benefits of teamwork from the list below. Select the 4 answer options that apply. Innovation Feeling supported Collective responsibility Emot
Imagine you are a passenger in a car and you are looking out the window. A car is in the lane next to you facing the same direction, but they are behind your ca
Write an explicit formula for an , the nth term of the sequence 29, 19, 9, ....
Find the equation for the line that passes through ( - 4,9) that has slope 5/7 slope form. You do not need to simplify.
in mechanism, photophosphorylation is most similar to
What is Ac in Centimeters?
Solve the system by substitution. 2x - y = -3, 2x-2y = -2
Jorge bought a phone card that has 120 min of phone use on it. The first week, he used 37.7 min. The second week, he used 12.7 min. The third and fourth weeks,
Mr. Shaw is making hamburgers for the cookout at his family reunion. He buys 12 lbs of meat at $3.19 per pound and 6 packages of buns at $1.49 each. If he gives
What is 1+1? Please HELP!!!! Will give brainliest