Question 187007
{{{m^2+9m=0}}} Start with the given equation


{{{m(m+9)=0}}} Factor out the GCF "m"



Now set each factor equal to zero:



{{{m=0}}} or  {{{m+9=0}}} 



{{{m=0}}} or  {{{m=-9}}}    Now solve for "m" in each case



So our answers are 


 {{{m=0}}} or  {{{m=-9}}}