Tham KY's answer to aqil's Secondary 4 A Maths question.

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Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
1st
Usually we work on the wanted one directly (s=15), instead of working on other condition indirectly... Your proof is working the indirect condition, depends on the teachers to accept, it is not wrong though..
aqil
Aqil
7 years ago
tq