Question 910055
{{{(2x+3)(x+1)-3(x+2)(x+1)=-3(x+5)}}}
{{{2x^2+5x+3-3(x^2+3x+2)=-3x-15}}}
{{{2x^2+5x+3-3x^2-9x-6=-3x-15}}}
{{{-x^2-4x-3=-3x-15}}}
{{{-x^2-x-3+15=0}}}
{{{-x^2-x+12=0}}}
{{{-1(-x^2-x+12)=0(-1)}}}
{{{highlight_green(x^2+x-12=0)}}}, which is factorable