sstrike's answer to Do you have chocolate?'s Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
sstrike
Sstrike's answer
5566 answers (A Helpful Person)
1st
Jessicca violet
Jessicca Violet
1 year ago
Hi, how did the second step , the one on (x+k)2 end up being another equation?
sstrike
Sstrike
1 year ago
Factorization