How many extraneous solutions does the equation have can support pupils to understand the material and improve their grades.
An 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.