Irah Athirah's answer to Joachim's Secondary 2 Maths Singapore question.
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”.
Sadly for part a, 5 x 6 is not 15.
Edit: Just seen the phrase “or otherwise”.