Question 1053521
{{{x+6=(1/2)(x+6)^2}}} --------- do not try to divide both sides by {{{x+6}}}.


{{{2(x+6)=(x+6)^2}}}
{{{2x+12=x^2+12x+36}}}
{{{0=x^2+10x+24}}}
{{{(x+6)(x+4)=0}}}
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solution:  {{{system(x=-6,or,x=-4)}}}