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
Jobisdone [24]
3 years ago
15

Which equation has exactly two real and two non real solutions?

Mathematics
2 answers:
tatiyna3 years ago
5 0

Answer:

The first option x^4-21x^2-100=0.

Step-by-step explanation:

To have exactly 2 real and two non real solutions, the degree of the polynomial must be a degree 4. Degree is the highest exponent value in the polynomial and is also the number of solutions to the polynomial. This polynomial ha 2 real+2 non real= 4 solutions and must be x^4. This eliminates the bottom two solutions.

In order to have two real and two non real solutions, the polynomial must factor. If it factors all the way like

x^4-100x^2=0\\x^2(x^2-100)=0\\x^2(x-10)(x+10)=0\\\\x^2=0\\x-10=0\\x+10=0

This means x=0, 10, -10 are real solutions to the polynomial. It has no non real solutions. This eliminates this answer choice.

Only answer choice 1 meets the requirement.

iren [92.7K]3 years ago
4 0

Answer:

A. x^4 - 21x^2 - 100 = 0


You might be interested in
PLZZZZ HELPPPP!!!!!! 12 POINTS!!!
Paha777 [63]
Plug in each pair into each system of inequalities. And see which one fits
4 0
3 years ago
Recently, your parents read in the newspaper that American factory worker jobs have the lowest income ra
Svetllana [295]

Answer:

A. A factory worker does not need a lot of education.

Step-by-step explanation:

The answer is " A " which is a factory worker does not need a lot of education. since most people don't have a PHD degree or anything higher education, it results in a lot of people joining due to the benefit of the factory worker doesn't need a lot of worker which makes it low in demand too.

5 0
2 years ago
Which is the best estimate for the length of a lady bug?
Effectus [21]

Answer:

The average length of a ladybug is . 3 to . 4 inches.

7 0
2 years ago
Find the algebraic expression for the word phrase 7 less than p
Doss [256]
So we need have to understand that if we were to solve this, our answer would be 7 less than 'p' with that information we get p-7.
8 0
2 years ago
Total health care costs in the United States in 2016 was $1.7 trillion. he US population was 290.9 million. What was the average
dusya [7]

Answer:

$5,843.9

Step-by-step explanation:

2016

Total health care cost in US = $1.7 trillion

= $1,700,000,000,000

Population in US = 290.9 million.

= 290,900,000

Average amount spent per person on health care = Total health care cost in US / Population in US

= 1,700,000,000,000 / 290,900,000

= $5843.9326228944

Approximately,

$5,843.9

To the nearest whole number

= $5,844

7 0
3 years ago
Other questions:
  • What is the value of z? 52° 104° 116° 208°
    13·2 answers
  • The population of a town can be modeled by P= 22,000 + 125t, where P represents the population and the t represents the number o
    14·1 answer
  • The statue of Zeus at Olympia is one of the Seven Wonders of the World. On a scale model of the statue, the height of Zeus is 8
    7·2 answers
  • The curve through the ordered pairs (0, 10), (1,5), and (2,2.5) can be represented by the function f(x) = 10(0.5). What is
    10·1 answer
  • Round 48,382 to the<br>nearest<br>100:<br>1,000:<br>10,000:​
    10·1 answer
  • David bought a chain of fast food restaurants that operated 200 stores in 2009. The number of restaurants has grown at a rate of
    7·1 answer
  • What is x/3=13<br><br><br><br><br><br><br>please help<br>​
    6·1 answer
  • Ok so they deleted my question… I need help… DETERMINATION!
    7·1 answer
  • For each pair solve of simultaneous equations solve for x and y x+y=13 and 8x-5y=0
    11·1 answer
  • You design a new app for cell phones. Your revenue for x downloads is given by f(x) = 3x Your profit
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!