2025 SST PRELIMS P2 Q2

2025 SST PRELIMS P2 Q2

Secondary 4
10 marks
2025 School of Science and Technology Prelims A Math Paper 2
  1. Without using a calculator, find the integer value of \((5^{\lg 2})(2^{\lg 3})(5^{\lg 9})(2^{\lg 6})\).[3]
  2. Given that \(\log_2(y^2)=4-\log_{0.5}x\), express \(y\) in terms of \(x\).[3]
  3. Solve the equation \(2e^x=3-5\sqrt{e^x}\).[4]

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Answer:(a) \(18\) (b) \(y=\pm4\sqrt{x},\ x>0\) (c) \(x=-\ln4=-1.39\text{ (3 s.f.)}\)

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