Question 242076
{{{ sqrt( x^2-25 )=x+5 }}} square both sides
{{{x^2-25 = (x+5)^2}}}
{{{x^2 -25 = x^2 + 10x + 25}}} collect like terms and simplify
{{{-50 = 10x}}}
{{{-5 = x}}}
check your answers