Grade Ladder: Algebra: Notes, Practice Questions & Worked Solutions
18 questions climbing from grade 1 to grade 9 across the algebra content of the Edexcel GCSE, two at each grade. Each question shows its grade, its…
Algebra
Algebra
Algebra
Iteration and Numerical Methods: Notes, Practice Questions & Worked Solutions
Some equations, like x³ − 3x − 5 = 0, can’t be solved by factorising or the formula. Iteration finds the answer to any accuracy by feeding each answer…
Algebra
Equation of a Circle and Tangents: Notes, Practice Questions & Worked Solutions
On GCSE Higher, every circle you meet in algebra is centred at the origin, so the equation is always x² + y² = r². Questions ask for the radius,…