Solve the equation x−12=35\displaystyle x^{\frac{-1}{2}} = \frac{3}{5}x2−1=53, giving your answer as a fraction in its lowest terms.
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.