Question 856194
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{{{x^2-6x-7=0}}}
{{{(x-7)(x+1)=0}}}
Two possible solutions:
{{{x-7=0}}}
{{{x=7}}}
Verify
{{{ln(7+7)-ln(7-5)=ln(7)}}}
{{{ln(14)-ln(2)=ln(7)}}}
True
and
{{{x+1=0}}}
{{{x=-1}}}
Can't be a solution since {{{ln(-1)}}} is not defined.
Only 1 solution, {{{x=7}}}