Answer:
x = 1/2 multiplicity 2.
Step-by-step explanation:
4x2-4x+1=0
(2x - 1)(2x - 1) = 0
2x - 1 = 0
x = 1/2
As 4x2-4x+1 is a perfect square the zeroes have multiplicity 2 ( i e duplicate roots).
The graph of the function just touches the x-axis at x = 1/2.