Question 166404
{{{x(x+3)^4(2x+3)^2=0}}}
then

x=0 or x+3=0 or 2x+3=0
then
x=0 or x=-3 or x=-3/2
then roots are:

0 (with multiplicity 1)
-3 (with multiplicity 4)
-3/2 (with multiplicity 2)