2025 YCKSS PRELIMS P2 Q1
2025 YCKSS PRELIMS P2 Q1
Secondary 4
9 marks
- Find all prime numbers satisfying \(-5\leq2x-3\leq7\).[3]
- Simplify \(\dfrac{18c^3d^3}{5f^3}\div\dfrac{3c^5d^2}{10f}\).[2]
- Simplify \(\left(\dfrac{16y^8}{81x^{12}}\right)^{-\frac34}\).[2]
- Write \(\dfrac{3x}{(2x-1)^2}-\dfrac2{2x-1}\) as a single fraction in its simplest form.[2]
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Answer:(a) \(2,3,5\) (b) \(\dfrac{12d}{c^2f^2}\) (c) \(\dfrac{27|x|^9}{8y^6}\) (d) \(\dfrac{2-x}{(2x-1)^2}\)
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