Question 921395
Remove the division symbol or add the proper grouping symbols.


One could only guess that you have this:
{{{y=(5(14-y)/(3))(y+1)}}}
{{{3y=5(14-y)(y+1)}}}
{{{5(14y-y^2+14-y)=3y}}}
{{{5(13y-y^2+14)=3y}}}
{{{65y-15y^2+70=3y}}}
{{{62y-15y^2+70=0}}}
{{{-62y+15y^2-70=0}}}
{{{highlight_green(15y^2-62y-70=0)}}}


Next find the discriminant.
{{{(-62)^2-4(15)(-70)}}}
{{{62^2+60*70}}}
{{{62^2+4200}}}
{{{8044}}}
Try factoring this discriminant,  
{{{8044=4*2011}}}


{{{y=(62+- 2*sqrt(2011))/(2*15)}}}
{{{y=(31+- sqrt(2011))/15}}}


This does not agree with what you teacher stated.
Look for any mistakes in my steps; otherwise, what where you really given?