See Joel Chan's answer to Jerlala's Secondary 4 E Maths question

Joel Chan's answer to Jerlala's Secondary 4 E Maths question.

3 Upvotes

0 Downvotes

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

Comments 3 add a comment

Jerlala

6 years ago

Thanks for the help.
Answer is x=7, x=-1(rej)
Why reject x=-1?

Joel Chan

6 years ago

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

Jerlala

6 years ago

Grateful for your help! Thanks. Goodnight