The operation $\&$ is defined as $a \& b = (a+b)(a-b)$. What is the value of $6 \& 3$?
Question:
The operation $\&$ is defined as $a \& b = (a+b)(a-b)$. What is the value of $6 \& 3$?
Answer:
Let's think step by step.

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The operation $\&$ is defined as $a \& b = (a+b)(a-b)$. What is the value of $6 \& 3$?
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