Eric Nicholas K's answer to Puay Xin yue's Secondary 3 E Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Here. I have included the cancelled working to show that the usual method of grouping terms into groups of two does not always work, as is the case when I tried it the first time.
Puay Xin yue
Puay Xin Yue
4 years ago
Tysm!