Joel Chan's answer to Jerlala's Secondary 4 E Maths question.
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Hey hope this helps! Just take note that one can always square both sides of the equation to find a solution :)
Date Posted:
6 years ago
Thanks for the help.
Answer is x=7, x=-1(rej)
Why reject x=-1?
Answer is x=7, x=-1(rej)
Why reject x=-1?
Hi, with the equation you gave me, either the answer is wrong or the equation given is wrong. In this equation, you will definitely get x=7 and x=1. One would only reject x=-1 because it is not part of the solution. You can see this is true if you input the equation in the graphic display calculator
Grateful for your help! Thanks. Goodnight
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