Sara is completing the square to find the maximum or minimum value of the function f(x) = (2 - x) (5 + x). what is the first step that sara must take? does the function have a maximum or minimum value? what is that value? a) multiply the binomials; maximum value; 49 4 b) multiply the binomials; minimum value; 49 4 c) set each factor equal to zero and solve for x; minimum value; −2 5 d) set each factor equal to zero and solve for x; maximum value; −7 2