Solve the equation y−13=25\displaystyle y^{\frac{-1}{3}} = \frac{2}{5}y3−1=52, 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.