Final answer:
Without the specific equation for f(x), it is not possible to determine the value of x that gives f(x) = 1. We would need the quadratic formula for f(x) to proceed with solving for x.
Step-by-step explanation:
To determine what value of x makes f(x) = 1, we need the function's equation. None of the provided excerpts directly offer the function f(x), but they do give examples of quadratic equations of the form ax² + bx + c = 0. To solve for x when f(x) = 1, we would typically rearrange the equation so that it becomes ax² + bx + (c - 1) = 0. In this context, without the specific equation for f(x), we cannot definitively find the value of x that makes f(x) = 1. A given quadratic could be manipulated by standard methods, such as factoring, completing the square, or using the quadratic formula (x = √(b² - 4ac)/2a).