Verify that (2x+3y)(x+5y)=2x2+13xy+15y2(2x+3y)(x+5y)=2x^2+13xy+15y^2(2x+3y)(x+5y)=2x2+13xy+15y2
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.