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secondary 4 | A Maths
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shorter method for (ii) pls
Date Posted: 5 years ago
Views: 313
(5x^4 ) x ( term independent of x in the expansion of (ax-2)^7 ) + (-280x^4 x 1/12) will give you the x^4 term, and thus the coefficient.
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done
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clear
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Hope this helps
Date Posted:
5 years ago
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