Question 1074638
{{{10y-40(1-y^2)=49y}}}
{{{10y-40+40y^2=49y}}}
{{{40y^2-39y-40=0}}}
{{{(8y+5)(5y-8)=0}}}
Two solutions:
{{{8y+5=0}}}
{{{8y=-5}}}
{{{y=-5/8}}}
and
{{{5y-8=0}}}
{{{5y=8}}}
{{{y=8/5}}}