用英语回答这个问题Why do you need to check the solution(s) of a rational equation?

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用英语回答这个问题Whydoyouneedtocheckthesolution(s)ofarationalequation?用英语回答这个问题Whydoyouneedtocheckthesolutio

用英语回答这个问题Why do you need to check the solution(s) of a rational equation?
用英语回答这个问题Why do you need to check the solution(s) of a rational equation?

用英语回答这个问题Why do you need to check the solution(s) of a rational equation?
Because sometimes the answer will make one of your denominators 0,and this means it is an extraneous solution.
中文就是避免增根.

为什么你需要检验有理方程式的解呢?

为什么你要用有理方程式来检验解答呢

I need to check the solutiins because I do not want to make careless mistakes.