Question 37275
For x - 2√x = 0, we move the root to the other side and then square both sides:
x = 2√x
x^2 = 4x
x^2 - 4x = 0
x(x - 4) = 0  and
x = 4 or x = 0
If we were to graph the two functions, we would find that they intersect at the points (0, 0) and (4, 4).