1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nasty-shy [4]
3 years ago
15

Simplify

alt=" \frac{4}{2 + i} " align="absmiddle" class="latex-formula">

Mathematics
1 answer:
skad [1K]3 years ago
6 0
Hey! Apologies that I can’t make this look nice because I’m on mobile.

To simplify this, we can multiply the denominator by its conjugate. For a imaginary function (a+bi), its conjugate would be (a-bi), so we can apply that here to multiply both sides by (2-i)/(2-i). This works because it simplifies to one. Then, we have our fraction as 4*(2-i)/((2-i)(2+i))=(8-4i)/(4-i^2)=(8-4i)/5

Feel free to ask further questions, and have a great rest of your day!
You might be interested in
An orange has about 1/4 cups of juice.Hiw many Oranges are needed to make 2 1/2 cups of juice?
marysya [2.9K]

Answer:

10/4 cups of juice

Step-by-step explanation:

4/4 = 1

so 4/4 + 4/4 = 2

and 1/2 = 2/4

then add

4/4 + 4/4 + 2/4 = 10/4

7 0
3 years ago
Read 2 more answers
Mrs. Browning bought ice cream treats for 6 children. Each child picked either a sundae or a milkshake. The sundaes cost $2 each
Anna35 [415]

Answer:

3 milkshakes and 3 sundaes

Step-by-step explanation:

3 * 5 = $15 + 3 * 2 = $21

6 0
3 years ago
Read 2 more answers
Graph on a number line and solve. (-4) + 8 =
grigory [225]

Answer:

its 4

Step-by-step explanation:

3 0
3 years ago
Daniela measures her math book and records its width as 21.9 cm to the nearest tenth of a centimeter. The actual measurement of
chubhunter [2.5K]
The percent of error is 0.5%
6 0
3 years ago
How do you Factor 6y^2-5y-21
Katarina [22]

Answer:

(2y+3) (3y-7)

hope it helps;)

5 0
3 years ago
Read 2 more answers
Other questions:
  • Pencils come in boxes of 10. How many boxes should Erika buy if she needs 127 pencils
    15·2 answers
  • Create an equation that you can use in everyday life. Then solve it.
    6·1 answer
  • What is the equation of a line that passes through the origin and is perpendicular to the line 2y=4x-6y+4?
    10·1 answer
  • What is the radius of the cone
    9·2 answers
  • Please help!! It’s timed!!
    13·1 answer
  • Evaluate the expression a=3, b=2, and c=12
    12·2 answers
  • Find the probability that a randomly selected point within the square falls in the blue shaded area (circle). r = 2 in [? ]% Rou
    5·1 answer
  • It takes Maya 2 1/2 hours to make cupcakes each batch of cupcakes takes 3/4 of an hour how many batches of cupcakes can she make
    9·1 answer
  • How many solutions does the equation 2 + 6(2 – 4) =<br> = 3x<br> 18 + 3x have?
    14·1 answer
  • Área de Cuadriláteros <br> ¿Me pueden ayudar con esta tarea?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!