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Friday, 17 April 2020
Cheng Rui's answer
A little bit unclear though... hope that it is not too hard to read
Feedback:
🧐 Note that there are "+" among the terms in the numerator; similar situation for denominator.
We can only "cancel" away the common factors if all the terms in the numerator & denominator mutliply to each other. So, the "cancelling" here is not valid.
Labels:
Algebra,
Challenging Question,
Factorisation
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