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There are three real numbers  that are not in the domain of

f(x) = (x - 1)(x - 2)(x - 3)/(x(x - 1)(x - 2))

What is the sum of those three numbers?

 Aug 2, 2021
 #1
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(x(x - 1)(x - 2))       If the value makes the denominator = 0 then that value is not in the domain of x values

 0    + 1    + 2    = 3

 Aug 2, 2021

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