The function f is given by f(x) = x^2 – 2x. Which statement is true about the graph of f? A. The graph has a y-intercept at (2.0).
B. The coordinates of the vertex are (1.1).
C. The graph of the function opens downward
D. The X-intercepts are at (0.0) and (2.0).

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.