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Eagles Nest BBS 5
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7th-College
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AlgebraT
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Algebra I v1.7.rsrc
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STR#_20992.txt
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1990-03-07
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Substitute #x01# everywhere #sfvar# appears in the original equation, and look for zero denominators.
An extraneous solution is one that gives an undefined result (like division by zero) when "plugged into" the original equation.
Since the variable #sfvar# appears in the denominator, you must check that #x01# is not an extraneous solution.
You have solved for #sfvar# correctly, but does that always mean #x01# is a solution to the orginal equation?