Lee Zhi Xian's answer to Kathy's Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Lee Zhi Xian
Lee Zhi Xian's answer
51 answers (Tutor Details)
1st
First we take power 4 since that will give x and x^-1 as the first and last terms. Then we realize that we need x^(1/2) and x^(-1/2), which we can square the original equation to get.