Verify that 3x2+9xx2−9\displaystyle \frac{3x^2 + 9x}{x^2 - 9}x2−93x2+9x simplifies fully to 3xx−3\displaystyle \frac{3x}{x-3}x−33x
255 exam-style questions on OCR GCSE Maths Algebraic Fractions. Each one has a worked solution and a mark scheme showing where the marks go.