4024/11 Oct/Nov 2025, Question 25: Factorising cubic expressions
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 3 marks
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The question, in short
Factorise 6x³ + 5x² − 4x completely.
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Solution · 3 marks
- 16x³ + 5x² − 4x = x(6x² + 5x − 4)
- 26x² + 5x − 4 = (2x − 1)(3x + 4)
- 3= x(2x − 1)(3x + 4)
Answerx(2x − 1)(3x + 4)
Stuck on a step? Read the free lesson: Factorising Quadratic Expressions
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