Show that 12+3\displaystyle \frac{1}{2+\sqrt{3}}2+31 can be written as 2−32-\sqrt{3}2−3
233 exam-style questions on Edexcel A 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.