Question 156948


{{{18d^2+30d+12=0}}} Start with the given equation



{{{6(d+1)(3d+2)=0}}} Factor the left side 




Now set each factor equal to zero:



{{{d+1=0}}} or  {{{3d+2=0}}} 



{{{d=-1}}} or  {{{d=-2/3}}}    Now solve for d in each case



So our answers are 



 {{{d=-1}}} or  {{{d=-2/3}}}