Eric Nicholas K's answer to .'s Secondary 3 A Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
The idea here is to form an equation in alpha and try to obtain alpha^4 from this equation alone.

Anyway, this topic is no longer in the new syllabus if you are taking the exams from next year onwards, unless you are a private candidate taking the old syllabus.