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
Ede4ka [16]
2 years ago
6

WILL MARK BRAINLIEST IF CORRECT❤️❤️ Simplify the expression -5+i/2i Step by step

Mathematics
2 answers:
solniwko [45]2 years ago
8 0

Answer:

For complex numbers,

a + bi and a - bi

they have the interesting property that if you add them you get the real number 2a

and if you multiply them , because of the difference of square pattern, you get a^2 - b^2 i^2

But since i^2 = -1, we end up with a real number as a product.

e.g. 6 - 5i and 6 + 5i are conjugates of each other

sum = 6-5i + 6+5i = 12

product = 36 - 25i^2

= 36 -(-25) = 61

Your question is even easier, since the denominator is a monomial instead of a binomial, so we just have to multiply by i/i

Also I believe, according to the answer, that you have a typo, and you meant

(-5+i)/(2i)

= (-5+i)/(2i) *i/i

= (-5i + i^2)/2i^2)

= (-5i +i^2)/-2

= (-5i - 1)/-2

= (1 + 5i)/2 or they way they have it: 1/2 + 5i/2

Step-by-step explanation:

PLZ MARK ME BRAINLYIST

zhenek [66]2 years ago
5 0

Answer:

For complex numbers,

a + bi and a - bi

they have the interesting property that if you add them you get the real number 2a

and if you multiply them , because of the difference of square pattern, you get a^2 - b^2 i^2

But since i^2 = -1, we end up with a real number as a product.

e.g. 6 - 5i and 6 + 5i are conjugates of each other

sum = 6-5i + 6+5i = 12

product = 36 - 25i^2

= 36 -(-25) = 61

Your question is even easier, since the denominator is a monomial instead of a binomial, so we just have to multiply by i/i

Also I believe, according to the answer, that you have a typo, and you meant

(-5+i)/(2i)

= (-5+i)/(2i) *i/i

= (-5i + i^2)/2i^2)

= (-5i +i^2)/-2

= (-5i - 1)/-2

= (1 + 5i)/2 or they way they have it: 1/2 + 5i/2

You might be interested in
Solve the inequality y − 6>10
fredd [130]

if y-6 > 10, and 16-6 = 10, then y > 16 since 17-6 = 11, which is greater than 10. Any number greater than 16 can fulfil this inequality.

8 0
3 years ago
Please help me with this
Kruka [31]
What is the question  

i will help
3 0
3 years ago
What is the value of X?
NISA [10]

Answer:

I think the answer for this question is 2.24cm

4 0
3 years ago
It is 185 miles to Fort Worth. If Vang drives
astra-53 [7]
2 hour at 65 mile per hour

65 x 2 = 130

130 miles driven within those 2 hours

185 - 130 = 55

Vang is 55 miles away from Fort Worth

hope this helps
4 0
3 years ago
Good afternoon!
Vladimir [108]

9514 1404 393

Answer:

  5) 112°

  6) 40°

Step-by-step explanation:

5) The angle E or ? is half the sum of the intercepted arcs:

  ? = (130° +94°)/2 = 112°

__

6) The angle D is half the difference of the intercepted arcs:

  ? = (135° -55°)/2 = 40°

8 0
2 years ago
Other questions:
  • You are driving 700 miles to visit relatives...(yuck) I hope you brought your Nintendo Switch. You drive the first 140 miles in
    6·1 answer
  • Help with number 6 please!
    11·1 answer
  • 32 is what percent of 160?
    5·1 answer
  • Solve the system of equations.
    11·1 answer
  • 20x2 – 20x + 60<br> what are all the number factors that can be factored out
    14·1 answer
  • (Use photo ) find the length of the hypotenuse in each right triangle. Please show work and round to the nearest tenth,if necess
    6·1 answer
  • Enter the coordinates of a point that is 5 units from (-2, -1). The coordinates of a point 5 units away is (-2, ).
    14·1 answer
  • Who wanna tal.k? im b0red :P (also ima female w/ blond hair, blue eyes, and medium body type)
    13·2 answers
  • Fill in the blank for this graph.
    5·1 answer
  • Where is mean by g(x)​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!