SOLUTION: Determine the value(s) of the variable that must be excluded from the domain. (x^2 - 16) / (-9x^2 + 27x + 36)

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Question 760702: Determine the value(s) of the variable that must be excluded from the domain.
(x^2 - 16) / (-9x^2 + 27x + 36)
Answer by josgarithmetic(39629) About Me  (Show Source):
You can put this solution on YOUR website!
Why do you want to exclude values from the domain? The domain is the set of input values or acceptable values for the independent variable, x.

The denominator is -9%28x%5E2-3x-4%29=-9%28x-4%29%28x%2B1%29, and because this is the denominator, you must not allow it to be zero. This effectively means x%3C%3E4 and x%3C%3E-1.