Farhana Banu's answer to elly's Secondary 3 A Maths Singapore question.
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Hope this helps! :)
Date Posted:
2 years ago
uhm i checked the ans and A is actually 5 idk how they get it :P
Hi the answer key must be wrong, A = 2 is the right answer.
If you check the workings again, when we expand the brackets, we only get one x^3 term, which is Ax^3.
So by comparing coefficients, A must be 2.
Hope this helps! ^^
If you check the workings again, when we expand the brackets, we only get one x^3 term, which is Ax^3.
So by comparing coefficients, A must be 2.
Hope this helps! ^^
yup i noticed too tyy :D
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