Show that 11+465+26\displaystyle \frac{11 + 4\sqrt{6}}{5 + 2\sqrt{6}}5+2611+46 can be written as 7−2613\displaystyle \frac{7 - 2\sqrt{6}}{13}137−26
134 exam-style questions on Edexcel AS Level Maths Algebraic Expressions, covering 1.1 Index Laws, 1.2 Expanding Brackets, 1.3 Factorising, 1.4 Negative and Fractional Indices, and 1.5 Surds. Each one has a worked solution and a mark scheme showing where the marks go.