To solve this problem you must apply the proccedure shown below:
1. You have the following functions given in the problem above:

and

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2. You have that g(x) times f(x) can be written as g(x)*f(x). Therefore, you must multiply f(x) * g(x), as following:
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3. Applying the distributive property, you have:
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The answer is:
Answer:

Step-by-step explanation:
The formula for area of a rectange is lw, where l is length and w is width. Since x-4 and 5x+2 are the sides, we can multiply them together to give us the area. We do (x-4)(5x+2). We use the FOIL method (First Outside Inside Last) and get 5x^2-18x-8.
Try to find the best domnatior and then do the mixed number then simplify
That ones a hardddd one ill let someone else answer thatttttt