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2026 GESS P1 Q3
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2026 GESS P1 Q3
Secondary 4
7 marks
Factorise completely the cubic polynomial \(2x^3-128\).
[2]
Express \(\dfrac{5x^2-18x+40}{2x^3-128}\) as the sum of 2 partial fractions.
[5]
Solution:
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Answer:
(a) \(2(x-4)(x^2+4x+16)\). (b) \(\dfrac1{2(x-4)}+\dfrac{2x-3}{x^2+4x+16}\).
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