Question 752143
{{{2 log10(x+1)=log10 (250)}}}
{{{ log10(x+1)^2=log10 (250)}}}
(x+1)^2=250
x+1=√250
x=-1±√250≈1±15.81
x≈-16.81(reject, (x+1)>0)
or
x≈14.81