Answer:
150 (D)
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Everything else is false and A is correct because the sum of two opposites equal 0.
The difference of the expression
is 
<h3>How to determine the difference?</h3>
The expression is given as:

Factor the denominators of the expressions:

Apply the difference of two squares to x² - 9

Take LCM

Hence, the difference of the expression
is 
Read more about expressions at:
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Answer:
3x2+15x+30 with a remainder of 68