Irah Athirah's answer to Joachim's Secondary 2 Maths Singapore question.

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Irah Athirah
Irah Athirah's answer
89 answers (A Helpful Person)
1st
Eric Nicholas K
Eric Nicholas K
4 years ago
Good evening Irah! We are not allowed to expand the expression in the second equation since we are required to use the first part results.

Sadly for part a, 5 x 6 is not 15.

Edit: Just seen the phrase “or otherwise”.