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What isn't x?

Algebra Level 1

What is the difference between these two:

\[ y = 1 \text{ and } y =\frac{x}{x}? \]

There is no answer at \(x = 1\) There is no answer at \(x=0, 1, -1 \) There is no answer at \(x=-1\) There is no answer at \( x = 0\)

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by Stephen Halby

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