Verify that (3x−5y)(x−4y)=3x2−17xy+20y2(3x-5y)(x-4y)=3x^2 - 17xy + 20y^2(3x−5y)(x−4y)=3x2−17xy+20y2
223 exam-style questions on OCR GCSE Maths Factorising Harder Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.