When you add 18 to 1/4 of a number, you get the number itself. The equation(s) that may be used to solve this problem is (let n = number):

n=24.

Step-by-step explanation:

1/4 of 24 is 6, and 6+18= 24.

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.

english, cause i can’t you