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

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sstrike
Sstrike's answer
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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