Question 797274
solve for x; 
lnx+ln(x+1)=1
ln(x)(x+1)=1
e=x^2+x
x^2+x-e=0
solve for x by quadratic formula:
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
a=1, b=1, c=-e
x=[-1±√(1-4*1*-e)]/2
x=[-1±√(1+4e)]/2