$MathMaster logo$

MathMaster

Home
general
x 3 x 2 4 0 what are the values of x

Question

X^3 - x^2 - 4 = 0, what are the values of x?

108

likes

539 views

Answer to a math question X^3 - x^2 - 4 = 0, what are the values of x?

$Expert avatar$

4.6

101 Answers

$(x-2)(x^{2}+x+2)=0$

$x-2=0\lor x^{2}+x+2=0$

$x=2,x=-\frac{1}{2}+i\frac{\sqrt{7}}{2},x=-\frac{1}{2}-i\frac{\sqrt{7}}{2}$

Frequently asked questions (FAQs)

Math question: Find the absolute extrema of the function f(x) = x^3 - 4x^2 - 3x + 1 on the interval [-2, 3].

+

Math question: "If log base 2 of x is equal to 3, what is the value of x?"

+

Find the derivative of f(x) = 2sin(3x) - cos(2x) - tan(4x) at x = π/6.

+

New questions in Mathematics

(x^2+3x)/(x^2-9)=

How do you think the company has increased or decreased its income?

4.2x10^_6 convert to standard notation

Determine the absolute extrema of the function 𝑓(𝑥)=𝑥3−18𝑥2 96𝑥 , on the interval [1,10]

The actual length of an object is 1.3 m . If the blueprint uses a scale of 1 : 12 , what is the length of the line on the drawing?

2x2 and how much?

During a fishing trip Alex notices that the height h of the tide (in metres) is given by h=1−(1/2)*cos(πt/6) where t is measued in hours from the start of the trip. (a) Enter the exact value of h at the start of the trip in the box below.

Exercise 1 An ejidal association wishes to determine the distribution for the three different crops that it can plant for the next season on its available 900 hectares. Information on the total available and how many resources are required for each hectare of cultivation is shown in the following tables: Total available resource Water 15,000 m3 Fertilizer 5,000 kg Labor 125 day laborers Requirements per cultivated hectare Corn Soybeans Wheat Water 15 25 20 Fertilizer 5 8 7 Labor** 1/8 1/5 1/4 *The data in fraction means that with one day laborer it will be possible to care for 8, 5 and 4 hectares respectively. * Sales of crops 1 and 3, according to information from the Department of Agriculture, are guaranteed and exceed the capacity of the cooperative. However, soybeans must be limited to a maximum of 150 hectares. On the other hand, the profits for each hectare of crop obtained are estimated at: $7,500 for corn, $8,500 for soybeans and $8,000 for wheat. The objectives are to determine: • How many hectares of each crop must be allocated so that the profit is maximum. R= • The estimated profits for the ejidal cooperative in the next growing season. R=

The simple average of 15 , 30 , 40 , and 45 is

What is 75 percent less than 60

The mass of 120 molecules of X2C4 is 9127.2 amu. Identify the unknown atom, X, by finding the atomic mass. The atomic mass of C is 12.01 amu/atom

A diamond ring was reduced from $999.99 to $689.99. Find the percent reduction in the price. Round the answer to the nearest tenth of a percent, if necessary.

We plan to test whether the mean mRNA expression level differs between two strains of yeast, for each of 8,000 genes. We will measure the expression levels of each gene, in n samples of strain 1 and m samples of strain 2. We plan to compute a P-value for each gene, using an unpaired two-sample t-test for each gene (the particular type of test does not matter). a) What are the null hypotheses in these tests (in words)? [2] b) If, in fact, the two strains are identical, how many of these tests do we expect to produce a P-value exceeding 1/4? [2]

Determine the kinetic energy of a baseball whose mass is 100 grams and has a speed of 30 m/s.

2 - 6x = -16x + 28

To paint a 250 m wall, a number of workers were employed. If the wall were 30 m longer, 9 more workers would be needed. How many were employed at the beginning?

calculate the product of 4 and 1/8

9n + 7(-8 + 4k) use k=2 and n=3