Answer:
What is the question
Step-by-step explanation:
So u can solve it for u
For this case we have the following function:

By definition, we have that the domain of a function is given by all the values for which the function is defined. The given function is not defined when the denominator is zero.
So:

Thus, the function is not defined at 
The domain is given by all real numbers except 2.
Answer:
The domain is given by all real numbers except 2.
Answer:
2.46
Step-by-step explanation:
Cross multiply again
Hope this helps!