Answer:
Step-by-step explanation:
To find the domain of a rational expression like you need to find out where the denominator is 0 because you cannot divide by 0
So, take the denominator x - 3 and set it to zero and solve for x
x - 3 = 0
x = 3
So the domain is all real numbers but where x = 3. You can write this in a few different ways in set notation.
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NOTE
R = real numbers
= element of
| = such that
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<u>Or you could write it this way</u>
<u>Or you could write it this way</u>