Which expression is equal to (f - g)(x)?

ANSWER

A. x-8

EXPLANATION

The given functions are:

We factor this to get,

and

Cancel the common factors to get,

OPTION A

Step-by-step explanation:

You need to divide the function f(x) by the function g(x):

Then:

Now, you need to simplify:

Factor the numerator. Find two numbers whose sum be -11 and whose product be 24. Theses numbers are -8 and -3. Then you get:

Remember that:

Then, you get that the expresson that is equal to   is:

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

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