We are given the following function

The real zero of the function is x = 1
The multiplicity of the function is 3
The graph of the function looks like below
As you can see, the function falls to the left and rises to the right.
Since the multiplicity of the function is 3, the end behavior of the function will be

Using the limit notation, we can write

As the value of x grows larger (approaches infinity) the end behavior of the function resembles y = x³