Question 419414

{{{2x(x+3)=-5x-15}}} 

{{{2x(x+3)+5x+15=0}}} 

{{{2x(x+3)+5(x+3)=0}}} 

{{{(2x+5)(x+3)=0}}} 


if {{{2x+5=0}}}...->...{{{2x=-5}}}...->...{{{x=-5/2}}}.

if {{{x+3=0}}}...->...{{{x=-3}}}...