Wee Yong Geng, Eldric's answer to nancy's Secondary 3 A Maths Singapore question.
You need to be careful here, as Secondary students do not learn the “factoring out of 2” part even though it’s more or less just indices.
That (1 - x/2) thingy is more for A Level when the powers are not positive integers.
That (1 - x/2) thingy is more for A Level when the powers are not positive integers.
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