Question 1068311
The roots mean that the polynomial has factors,
{{{f(x)=(x-a)(x-b)(x-c)(x-d)}}}
Substitute for the values of a,b,c,d.
{{{f(x)=(x-0)(x-0)(x-3)(x-(-3))}}}
{{{f(x)=x(x)(x-3)(x+3)}}}
{{{f(x)=x^2(x^-9)}}}
{{{f(x)=x^4-9x^2}}}