Question 369531
{{{9x^3-2400x^2+240000x-8000000=(3x-200)(3x^2-600x+40000)}}}
{{{3x-200=0}}}
{{{3x=200}}}
{{{highlight(x=200/3)}}}
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{{{3x^2-600x+40000=0}}}
{{{3(x^2-200x)+40000=0}}}
{{{3(x^2-200x+10000)+40000-30000=0}}}
{{{3(x+100)^2=-10000}}}
{{{(x+100)^2=-10000/3}}}
{{{x+100=0 +- sqrt(10000/3)i}}}
{{{highlight(x=-100 +- (100*sqrt(3))/3)i)}}}