Question 893671

{{{3x^2+7x=0}}}
{{{x(3x+7)=0}}}
Two solutions:
{{{x=0}}} 
and
{{{3x+7=0}}}
{{{3x=-7}}}
{{{x=-7/3}}}
.
.
.
{{{graph(300,300,-5,5,-5,5,3x^2+7x)}}}