![]() Now I can evaluate the listed expressions: It's probably simpler in this case to evaluate first, so: To find the answers, I can either work symbolically (like in the previous example) and then evaluate, or else I can find the values of the functions at x = 2 and then work from there. This exercise differs from the previous one in that I not only have to do the operations with the functions, but I also have to evaluate at a particular x-value. My answer is the neat listing of each of my results, clearly labelled as to which is which. To find the answers, all I have to do is apply the operations (plus, minus, times, and divide) that they tell me to, in the order that they tell me to. There's nothing more to this topic than that, other than perhaps some simplification of the expressions involved. For instance, when they give you the formulas for two functions and tell you to find the sum, all they're telling you to do is add the two formulas. Performing these operations on functions is no more complicated than the notation itself. Now you will learn that you can also add, subtract, multiply, and divide functions. Then you learned that you can add, subtract, multiply, and divide polynomials.
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