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
mihalych1998 [28]
2 years ago
13

Factor each x^3 +2x^2 -4x -8 =0

Mathematics
2 answers:
love history [14]2 years ago
7 0

Answer:

Standard form:

x3 + 2x2 − 4x − 8 = 0

Factorization:

(x + 2)2(x − 2) = 0

Solutions based on Jenkins–Traub algorithm:

x1 = x2 = −2

x3 = 2

Extrema:

Max1 = (−2, 0)

Min1 = (0.666667, −9.481481)

Step-by-step explanation:

ludmilkaskok [199]2 years ago
4 0

Answer:

x= -2,2 hope this helps

Step-by-step explanation:

You might be interested in
What are three consecutive integers whose product is 480 more than their sum?
Natali [406]

Answer:

The three numbers are 7 8 and 9

Step-by-step explanation:

Givens

  • Let the first number be n - 1
  • Let the second number be n
  • Let the third number = n + 1

Equation

(n - 1)(n)(n + 1) - (n-1 + n + n+1) = 480

Solution

Multiply (n - 1) and (n + 1) = (n - 1)*(n + 1) = n^2 - 1

Multiply the second integer by the result of the first and third: n (n^2 - 1)

Add the three integers together: (x - 1) + (n - 1) + n = 3n  Combine these 2 steps

n(n^2 - 1) - 3n = 480 Remove the brackets

n^3 - n - 3n = 480

n^3 - 4n = 480

n^3 - 4n - 480 = 0

Graph

The graph shows that the intercept point is n =8. This is the only way I can see to solve this cubic. There are no other real roots.

Answer

n - 1 = 7

n = 8

n + 1 = 9

Check

Product 7*8*9 = 504

Sum = 7 + 8 + 9 = 24

504 - 24 = 480 Which checks.

4 0
3 years ago
The density of a certain material is such that it weighs 9 kilograms for every 7 cubic feet of volume. Express this density in p
Vadim26 [7]

Answer:

1.641× 10^-3 pounds/ cubic inch

Step-by-step explanation:

Density= mass / volume

Mass of the material= 9 kilograms

Volume= 7 cubic feet

Density= 9/7= 1.286 kg/ ft^3

Density= 1.286 kg/ ft^3

To Convert to pounds per inch

1 kg/ ft^3 = 0.00128 pound / cubic inch

1.286 kg/ ft^3 = X pounds/ cubic inch

X=( 1.286 × 0.00128)

= 0.0016407087 pounds/ cubic inch

= 1.641× 10^-3 pounds/ cubic inch

Hence,this density in pounds per inch is 1.641× 10^-3 pounds/ cubic inch

5 0
3 years ago
A 72,000 gallon water tower is being drained. Two thousand gallons are drained in the first hour. How many hours will it take to
ololo11 [35]

Answer:

To drain the water tower it will take 36 hours.

Step-by-step explanation:

Given:

A 72,000 water tower is being drained, and in an hour 2000 gallons are drained.

Now, to calculate the hours it would take to drain total 72,000 gallons of water, we should divide the gallons of water drained in one hour by total gallons of water in the tower.

Gallons of total water in the tower ÷ Gallons of water drained per hour

72000\div 2000

=\ 36

Therefore, to drain the water tower it will take 36 hours.

6 0
3 years ago
Please help don't understand how to do this, show steps
Anit [1.1K]
First get what equals 20
6 0
3 years ago
What is the value for y?<br> Enter your answer in the box.<br> y=
serious [3.7K]

Answer:

y =112

Step-by-step explanation:

Given

The attached triangle

Required

Find y

The attached triangle is isosceles; so:

x - 5=34

Also, we have:

y + x - 5 + 34=180 --- angles in a triangle

Substitute: x - 5=34

y + 34 + 34=180

Collect like terms

y =- 34 - 34+180

y =112

5 0
3 years ago
Other questions:
  • 28 is 32% of what number?
    8·2 answers
  • ??????? Help please please
    5·1 answer
  • A single trip on a toll road costs $1.20. Frequent users can get a monthly pass that costs $25. How many times must a person use
    9·2 answers
  • Wendy is logging the number of video game levels she wins per hour. She has determined the function to be f(x) = 6x + 9, where x
    12·2 answers
  • How much greater is the median number of pairs of shoes in the inventory at the Golf Pro Shop than the median number of pairs of
    9·1 answer
  • Solve for F. Let m=5, a=3 F=ma
    7·1 answer
  • Answer number 7 please
    13·1 answer
  • WILL MARK BRAINLIEST!!!!!! HELP ASAP!!!!
    12·2 answers
  • In triangle ABC, points N and M lie on sides AB and AC, respectively.Given AM = AN = BM = NC = BC, find m∠BAC.
    6·1 answer
  • A parade route is 3 4 mile long. there will be a refreshment stand at the beginning and end of the route. there will also be 8 r
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!