Simplify (125x68y3)−23\displaystyle \left(\frac{125x^6}{8y^3}\right)^{-\frac{2}{3}}(8y3125x6)−32, giving your answer as a single fraction with positive indices.
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.