Reduce the polynomial equation to its simplest form.
4x^4 + 24x^3 + 48x^2 + 24x
x^4 + 6x^3 + 12x^2 + 6x
<sys>[INST] Reduce the polynomial equation to its simplest form. [/INST] Input:
4x^4 + 24x^3 + 48x^2 + 24x </sys>