Se quiere colocar un cable desde la cima de una torre de 25 metros altura hasta un
punto situado a 50 metros de la base la torre. ¿Cuánto debe medir el cable?

For this case we have:

You want to run a cable from the top of a 25 meter high tower to a

point located 50 meters from the base of the tower. How long should the cable measure?

Looking at the attached figure, we have to find the length of the hypotenuse of the triangle, which corresponds to the length of the cable. To do this, we apply the Pythagorean theorem:

Where:

h: It is the hypotenuse

a, b: They are the legs of the triangle

In this case we have:

Substituting:

Thus, the length of the cable is

The cable length is

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

heudhduxhdnshenebdutbbt

step-by-step explanation:

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