The final expression is 
Step-by-step explanation:
The expression that we have is

In order to solve the expression, we start by applying the distributive property to the bracket. We get:

Simplifying,

Now we add the two terms in x, and we find:

Which is the final expression.
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Answer:
D, irrational numbers,
Step-by-step explanation:
75 is part of all groups except irrational numbers, it is an integer, a whole number and a natural number..
The length of the midsegment is the sum of the two bases divided by 2.