Joy Foo Jia Ei's answer to Ram's Secondary 2 Maths Singapore question.
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Date Posted:
2 years ago
The third last line to the second last line is incorrect.
In general, for expressions of the form ab + cd (ie all four terms a, b, c and d are distinct from one another), they cannot be factorised into (a + c) (b + d).
In general, for expressions of the form ab + cd (ie all four terms a, b, c and d are distinct from one another), they cannot be factorised into (a + c) (b + d).
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