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2026 TPSS P2 Q1
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2026 TPSS P2 Q1
Secondary 4
8 marks
Given the formula \(p=\dfrac{4q-5r}{q+r}\), find \(p\) when \(q=5\) and \(r=-2\).
[1]
Rearrange the formula \(p=\dfrac{4q-5r}{q+r}\) to make \(q\) the subject.
[3]
Factorise \(x^2-3x+9y-3xy\).
[2]
Solve \(2x^2-5x-7=0\).
[2]
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Answer:
(a)(i) \(10\) (ii) \(q=\dfrac{r(p+5)}{4-p}\) (b) \((x-3y)(x-3)\) (c) \(x=\dfrac72\) or \(-1\)
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