2026 IGCSE 0580 February/March P22 Q22

2026 IGCSE 0580 February/March P22 Q22

7 marks
  1. Expand and simplify \((x+5)(x-3)^2\).[3]
  2. On the diagram, sketch the graph of \(y=(x+5)(x-3)^2\), indicating the values where the graph crosses the axes.
    [4]

Solution:

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Answer:(a) \(x^3-x^2-21x+45\). (b) Crosses at \((-5,0)\) and \((0,45)\); touches at \((3,0)\).

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