2026 ZHSS P1 Q2

2026 ZHSS P1 Q2

Secondary 4

4 marks

Show that the curve \(y=-3x^2+5x-4\) lies completely below the line \(y=x-2\).[4]

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Answer:\(-3x^2+4x-2<0\) for every real \(x\), so the curve lies completely below the line (shown).

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