Given the function:
f(x) = x² - 2x
How can you restrict the domain so that f(x) has an
inverse? What is the equation of the inverse function
A. x ≥ 0; f-¹ (x) = 1+√√x+1
B. x ≥ 1; f-1 (x) = 1 + √x+1
C. x ≥ 0; f-1 (x) = 1-√√x+1
D. x ≥ 1; f-1 (x) = 1-√√x+1