### 1)The function f is defined by the equation f(x)+ x-x^2. Which of the following represents a quadratic with no real zeros?

A)f(x) +1/2 B)f(x)-1/2 C)f(x/2) D)f(x-1/2) 2) If I^(2k) = 1, and i = radical -1, which of the following must be true about k? A) k is