Boy Mow Chau's answer to Candice lim's Junior College 1 H2 Maths Singapore question.

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Boy Mow Chau
Boy Mow Chau's answer
317 answers (Tutor Details)
1st
try to remember the trick of squaring both sides (line 6)

quite common to have questions involving this idea.
Boy Mow Chau
Boy Mow Chau
2 years ago
another good practice is to try to make a sketch to visualise the problem. i did start with a sketch but did not show it here.
Candice lim
Candice Lim
2 years ago
Thank you so much Mr Chau. Your working is very clear. It shows me where is my missing step :)