Danny Low's answer to R's Secondary 4 E Maths Singapore question.

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Danny Low
Danny Low's answer
1021 answers (Tutor Details)
There are 2 important points to solving this question.

First is to observe that the denominator of the first term is actually the product of the second and third denominators (with a slight difference),

With this observation, we can safely proceed to combine the second and third terms because we should then be able to combine them with the first term.

Secondly, when we are going to combine the terms, observe that

x - 1 = - ( 1 - x )

and make sure we change the sign