College Algebra / Alg 138 · Atom · ~20 seconds
Checking in the Original Equation
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An extraneous solution is a value the solving method produces that fails the original equation; every rational-equation answer gets checked there.
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x/(x − 2) = 2/(x − 2) clears to x = 2, the very value both denominators forbid. No solution.
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Check against the original, never the cleared version.
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