Paper 1 · Algebra
⏱ Tested in 5+ recent exam questions
Lesson 2 of 23
Algebra 2 – Factorising quadratic equations
You’ll learn
- Factorise quadratics by splitting the middle term (product = a·c, sum = b)
- Group the four terms after the split to reveal the common bracket
- Handle non-monic quadratics like 2x² − x − 6 with the a·c method
Formula used
Roots of the quadratic equation
x = (-b ± √(b² − 4ac)) / 2a
On page 20 of the log tables — read it off, don’t memorise.Most recent exam questions
- 2026 P1 Q1(c)
- 2026 P1 Q6(b)
- 2026 P1 Q7(c)
- 2026 P1 Q9(g)
- 2026 P2 Q7(c)(i)
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