Question 843533

{{{ (q+3)(3q-4)(2q+1)=0}}}
Use the FOIL method on the first two factor:
{{{ (3q^2-4q+9q-12)(2q+1)=0}}}
{{{(3q^2+5q-12)(2q+1)=0}}}
Distributive property:
{{{6q^3+10q^2-24q+3q^2+5q-12=0}}}
{{{6q^3+13q^2-19q-12=0}}}