Question 747560
The equation may be more clearly understood in this form first:

{{{4/(x+2)-1/(3x)=10/(x+2)}}}


Identify the common denominator of 3x(x+2), and multiply the left member and the right member by 3x(x+2), which will clear the denominators from each term.


{{{3x(x+2)(4/(x+2)-1/(3x))=3x(x+2)(10/(x+2))}}}
{{{12x-(x+2)=30x}}}
{{{12x-x-2=30x}}}
{{{11x-2=30x}}}
{{{-2=21x}}}
{{{highlight(x=-2/21)}}}


This seems to NOT be a quadratic equation.