kinglakethia kinglakethia

21-12-2017
Mathematics

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Using interval notation, identify the domain for the function: f(x)= x^2-9/x^2-7x+12

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lesliekolleroxrkcf lesliekolleroxrkcf

21-12-2017

the function is undefined when denominator is 0 or

x² - 7x + 12 = 0
(x-3)(x-4)=0
x= 3 or 4 is disallowed so answer is

(-∞,3] union [3,4] union [4,∞)

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