Solve k2−k−20=0k^2 - k - 20 = 0k2−k−20=0
Practise OCR GCSE Maths Solving Quadratics with exam-style questions for Foundation and Higher tier. 72 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.