Question 228523
{{{3x^2-18=-3x}}} Start with the given equation.



{{{3x^2+3x-18=0}}} Add 3x to both sides.



{{{3(x+3)(x-2)=0}}} Factor the left side 


Now set each factor equal to zero:

{{{x+3=0}}} or  {{{x-2=0}}} 


{{{x=-3}}} or  {{{x=2}}}    Now solve for x in each case



So our answers are 


 {{{x=-3}}} or  {{{x=2}}}