Final answer:
To evaluate and simplify the expression f(3) - f(-6), you would substitute 3 and -6 into the function f, and subtract the results.
Step-by-step explanation:
The question requires us to evaluate and simplify the expression f(3) - f(-6). This involves substituting the values into the function f and calculating the result. To simplify expressions like those mentioned, such as 5 - (+3) = 2 or 2 - (-6) = 8, we need to follow the rules of arithmetic operations including the handling of negative signs.
Looking at some of the example solutions provided, one common theme is substituting values into given expressions or formulas. For instance, substituting a = 3, b = 13, and c = -10 into a formula leads us to math operations involving square roots and arithmetic. Another solution mentions evaluating mathematical expressions with different signs which could be applicable to understanding how to subtract negative numbers.
Without the actual function f being defined, we cannot provide a numeric answer. However, in general, to evaluate f(3), one would substitute 3 into the function f, and to evaluate f(-6), one would substitute -6 into the function f. The answer would be the subtraction of these two results.