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# Algebra

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For what real values of a is the expression (a + 3)/(a^3 - a) undefined? List your answers in increasing order separated by commas.

Jan 29, 2022

For the expression to be undefined, it has to be $$x \over 0$$. The only ways to get $$a^3-a$$ equal to $$0$$ is when $$a$$ is $$\color{brown} -1, 0, 1$$