SOLUTION: y= sqrt(x+4)/x^2-2x-3 solve for x

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Question 668788: y= sqrt(x+4)/x^2-2x-3 solve for x
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
y = %28sqrt%28x%2B4%29%29%2F%28x%5E2+-+2x+-+3%29
...
x%5E2+-+2x+-+3
Undefined where the denominatore = 0
(x-3)(x+1) = 0
x = 3
x = -1
...
x intercepts at sqrt%28x%2B4%29 = 0
0 = sqrt%28x%2B4%29
0%5E2+=+sqrt%28x%2B4%29%5E2
0 = x+4
x = -4
...
x intercept at (-4,0)
domain (-infinity, -1) U (-1, 3) U (3, infinity)
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