mel720 mel720
  • 25-07-2020
  • Mathematics
contestada

What is the value of the product (4 - 21)(6 + 2/)?
20 - 41
20 + 161
28 + 161
28 - 41

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 05-08-2020

Answer:

  28 -4i

Step-by-step explanation:

Perhaps you want the product ...

  (4 -2i)(6 +2i)

Multiplying in the usual way, we get ...

  (4)(6) +(4)(+2i) +(-2i)(6) +(-2i)(2i)

  = 24 +8i -12i -4i^2

Recognizing that i^2 = -1, we can collect terms to get ...

  = 24 +i(8 -12) -4(-1)

  = 28 -4i

_____

Please note that i = √(-1) is not the same as 1 or /. You may need to edit your question to ensure the correct symbol is used.

Answer Link

Otras preguntas

hi when did Hitler die xxx
You decide to buy your first car. However, when you go to the dealership they want you to pay in cash and provide you with no contract. What is the benefit of a
In one baseball season, Peter hit twice the difference of the number of home runs Alice hit and 6. Altogether they hit 18 home runs. How many home runs did each
During what year was FIDE established?
Multiply the following
For the system of equations shown below 2x = −y + 6 −4x + 3y = 8 What is the solution to the system of equations?
Charlie runs at a speed of 3 yards per second.about how many miles does Charlie run
what is MEDC's and LEDC's stand for
How was the African slave trade adapted to European needs?
8 minus the quotient of 15 and y in algebraic expression