the algebraic expressions x-2 divided by x² -9is undefined when x is ..?

the algebraic expressions x-2 divided by x² -9is undefined when x is ..?

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It's undefined when the denominator is 0. This occurs when \[x^2-9=0 \rightarrow x=\pm 3\]

if the denominator is zero than wouldnt the answer be zero?

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