Final answer:
The domain of the function f(x) = x² - x - 56 is all real numbers, as there are no restrictions on the values x can take for a polynomial function.
Step-by-step explanation:
For a function, the domain denotes all permissible input values. Since the quadratic function (x)=x 2 −x−56 only involves polynomial operations, there are no constraints on x that lead to undefinable outcomes. Any real number can be entered into this function without any problems, provided there are no square roots or denominators. Consequently, all real numbers (-∞, +∞) fall into the domain of f(x)=x 2−x−56, indicating an infinite range of x values that can be utilized without resulting in computational problems Tan B).