Answer:
x^3
Step-by-step explanation:
the highest variable in that expression will be x^3 if you were to expand it, so x^3 is the parent function.
The parent function, also known as simplest function, is basically the highest variable in the equation. So for a linear expression it's x, for a quadratic it's x^2, for a cubic it's x^3, for an exponential it's 2^x etc
