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anonymous
 one year ago
find domain when f(x)=9/(x^2+4x)
anonymous
 one year ago
find domain when f(x)=9/(x^2+4x)

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3set the denominator equal to 0 and solve for x x^2+4x = 0 x = ?? or x = ??

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0what are you not seeing clearly

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0If the denominator of a fraction moves ever closer to zero as you move towards some value of x, then the result would be values of f(x) that will become ever larger as x gets closer to that value

DanJS
 one year ago
Best ResponseYou've already chosen the best response.0for instance here , if x^2 + 4x can be zero at any x value, the function will go off to huge numbers as you get closer to that x value, and that x value is not defined or in the domain of the function
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