Jiayang's answer to Newzealand's Junior College 1 H1 Maths question.

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Jiayang
Jiayang's answer
1883 answers (Tutor Details)
1st
It's just factor formula
Newzealand
Newzealand
6 years ago
Thanks a lot
May i know how to make cosx+cos5x=2cos2xcos3x??
Jiayang
Jiayang
6 years ago
Factor formula