Awhole number increased by its square is 4 times itself. find the number

let n = the number

 so from the problem we get:

n + n² = 4n 
subtract n from each side
n² = 3n

 get both n's on the same side of the equation
 n² - 3n = 0

 now factor
 n(n - 3) = 0
n = 0   or n = 3

If 0 is considered a whole number, there are two solutions: n = 0 and n = 3.

If not, the only solution is n = 3

 since you asked for the number, we will assume 3 is the only answer

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

4

step-by-step explanation:

im pretty sure it's 4 beacsue 8/2 equals 4