SOLUTION: what is the domain: (x+3)/(x^2-4x)

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Question 678107: what is the domain: (x+3)/(x^2-4x)
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
All real numbers except 0 and 4
...
x%5E2-4x=0
x(x-4)=0
x=0
AND
x-4=0
x=4
...
The equation has a whole, undefined area, where x = 0 and x = 4
Domain is
(-infinity, 0) U (0, 4) U (4, infinity)
...
graph%28300%2C200%2C-10%2C10%2C-10%2C10%2C%28x%2B3%29%2F%28x%5E2-4x%29%29
.....................
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