Quadratic Inequalities
Solving x² − 5x + 6 < 0 looks like solving an equation, and the first half is. The second half, deciding which side of the roots you want, is where…
Algebra and Graphs
IGCSE Maths
Algebra and Graphs
Quadratic Inequalities — Practice Questions
12 exam-style questions (37 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
Algebra and Graphs
Quadratic Inequalities — Worked Solutions
Full worked solutions to all 12 questions (37 marks), set out the way an Edexcel examiner wants to see them.
Algebra and Graphs
Arithmetic Sequences and Series
An arithmetic sequence goes up or down by the same amount each time. Edexcel Higher goes beyond the nth term and asks you to add up the terms, which is…
Algebra and Graphs
Arithmetic Sequences and Series — Practice Questions
12 exam-style questions (37 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
Algebra and Graphs
Arithmetic Sequences and Series — Worked Solutions
Full worked solutions to all 12 questions (37 marks), set out the way an Edexcel examiner wants to see them.
Algebra and Graphs
Transformations of Graphs
If you know the shape of y = f(x), you can sketch y = f(x) + 3, y = f(x − 2) or y = 2f(x) without plotting a single point. This page covers the four…
Algebra and Graphs
Transformations of Graphs — Practice Questions
12 exam-style questions (32 marks), building from warm-up to grade 8–9. Show full working: Edexcel gives method marks even when the final answer is wrong.
Algebra and Graphs
Transformations of Graphs — Worked Solutions
Full worked solutions to all 12 questions (32 marks), set out the way an Edexcel examiner wants to see them.
Algebra and Graphs
Expanding Triple Brackets
Expanding three brackets is a standard 3-mark question on the Higher paper. It also feeds into proofs, volumes and cubic graphs. The method is always…