Answer
$x=59$
Work Step by Step
$\sqrt {x+5}-8=0$
Add 8 to both sides.
$\sqrt{x+5}-8+8=0+8$
Simplify.
$\sqrt{x+5}=8$
Square both sides.
$(\sqrt {x+5})^2=8^2$
Simplify.
$x+5=64$
Subtract 5 from each side.
$x+5-5=64-5$
Simplify.
$x=59$