SOLUTION: How do I find the domain of the function F(x)=(8x+12)/(x^2=5x+4)

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Question 335499: How do I find the domain of the function F(x)=(8x+12)/(x^2=5x+4)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
It's all x values for which f(x) is defined.
f(x) is undefined when the denominator equals zero.
Solve x%5E2%2B5x%2B4=0
%28x%2B1%29%28x%2B4%29=0
Two solutions:x%2B1=0
x=-1
.
.
.
x%2B4=0
x=-4
.
.
.
The domain is therefore all x values except x=-1 and x=-4.