College Algebra / Alg 378 · Atom · ~20 seconds
Removable Discontinuities
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State
A removable discontinuity — a hole — sits at a denominator zero whose factor cancels; the value stays excluded anyway.
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In (x² − 9)/(x² + 5x + 6), the factor x + 3 cancels; the graph is (x − 3)/(x + 2) minus one point — a hole at (−3, 6).
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