
This is the graph of f(x)=x⁶-2x⁵-9x⁴+18x³=x³(x-3)(x+3)(x-2).
It has a multiple zero at x=0 and other zeroes at -3, 2, 3.
There are many more polynomials of degree 6 which include the given zeroes. For example:
f(x)=x⁶-2x⁵-8x⁴+16x³-9x²+18x=x(x²+1)(x-3)(x+3)(x-2) shown below.
