Question 1027655
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Find the values of x for which the combined function h(x) = f(x)/g(x)  is undefined if f(x) = 5x + 1 and g(x) = x^2 - 9.
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Those "x"s are zeros of the denominator g(x) = 0.

I.e.  {{{x^2-9}}} = {{{0}}}.

The roots are x = 3 and x = -3.
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