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
enot [183]
3 years ago
14

What is the solution of the equation when solved over the complex numbers?

Mathematics
1 answer:
kumpel [21]3 years ago
3 0

Answer:

x=+i\sqrt{20}\approx+4.472i

x=-i\sqrt{20}\approx-4.472i

Step-by-step explanation:

Starting from x^2+20=0, we do x^2=-20, which means x=\pm\sqrt{-20}, which can be written as x=\pm\sqrt{(-1)(20)}, which gives us x=\pm\sqrt{(-1)}\sqrt{(20)}, which we know is x=\pm i \sqrt{(20)}, so our solutions are:

x=+i\sqrt{(20)}

x=-i\sqrt{(20)}

Which can be approximated to:

x\approx+4.472i

x\approx-4.472i

You might be interested in
Which of the following BEST describes a pyramid?
Jet001 [13]

Answer:

C

Step-by-step explanation:

Pyramids must have bases and a point off the base

3 0
2 years ago
What’s the answer to (-2)(-3)
PIT_PIT [208]

Answer:

+ 6

Step-by-step explanation:

(-2)·(-3) = + 6

(-)·(-) = +

4 0
3 years ago
Read 2 more answers
Is the solution of b x 5/6 = 25 greater than or less than 25
azamat

Answer:

Greater. (30)

Step-by-step explanation:

Simplest way to find out is divide.

Flip 5/6 and multiply.

25 x 6 = 150

150 / 5 = 30

8 0
2 years ago
I need help urgent this is to hard for me to do
Morgarella [4.7K]

Answer:

( 7 , 4 )

given:

  • 4x + 10y = 68
  • 4x - y = 24

make y the subject in equation 2:

4x - y = 24

-y = 24 - 4x

y = 4x - 24

insert this in equation 1:

4x + 10y = 68

4x + 10(4x - 24) = 68

4x + 40x - 240 = 68

44x = 68 + 240

44x = 308

x = 7

solve for y:

y = 4x - 24

y = 4(7) - 24

y = 4

6 0
2 years ago
Read 2 more answers
Im trying to do IXL and I dont understand the way my teacher teaches (ironic right?)
Anastaziya [24]

Answer:

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!
    11·2 answers
  • Shea has a cube that is 1 unit long,1 unit wide and 1 unit high. What is the volume of Shea’s cube
    14·1 answer
  • X²-9\x-3 explain why x doesnt = 3
    14·1 answer
  • Writs a doubles plus one fact for the sum of 7
    9·1 answer
  • Whats the answer to all of these
    8·1 answer
  • HELLPP ASAP!!!! <br> 1. Find the unknown side lengths in these right triangles.
    14·2 answers
  • Please help ppppppppppppp
    6·2 answers
  • The first population is currently 124,900. if the population doubles every 25 years, what will the population be 100 years from
    8·2 answers
  • Are they congruent?<br>Congruence method?<br>Congruence statement.​
    7·1 answer
  • The question is below.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!