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

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
We simply use our few basic identities and techniques such as combining into single fraction, factorising into brackets, expanding brackets, introducing conjugate etc to prove these more complicated identities.