Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.
Review: Custom Operation
Explanation
In this question, we are given the definition of an
operation that has been created just for the purpose of the question. To
evaluate the given expression, we will apply the definition. Parentheses have
not been given any special definition here, so we will take them to have their
usual meaning, which is that we perform the operation inside the parentheses
first, and use the result to perform the operation a second time.
So, applying the definition again:
The correct answer is (D).
If you believe you have found an error in this question or explanation, please contact us and include the question title or URL in your message.