Example 1: But 2 is excluded from the domain of the original equation because it would make the denominator of one of the fractions zero–and division by zero is not allowed! . Therefore, it

Get StartedAn extraneous solution is defined as a solution, such as that to an equation, that emerges from the process of solving the problem but is not a valid solution to the problem.

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Clear up math

To clear up a math equation, work through each step of the equation slowly and carefully. Check your work as you go to identify any mistakes. Once you have the correct answer, double check it to be sure.