Find all values of which satisfy x>4
which satisfy \[\sqrt{x - 4 \sqrt{x - 4}} + 2 = \sqrt{x + 4 \sqrt{x - 4}} - 2.\]
Squaring both sides, the equation simplifies to
2(x - 16) = 2*sqrt((x - 16)^2)
This is satisfied only for x >= 16, so the solution is [16,inf).
