Given that (ax12)34x2=16x−12\displaystyle \frac{(ax^{\frac{1}{2}})^3}{4x^2}=16x^{-\frac{1}{2}}4x2(ax21)3=16x−21, find the value of aaa.
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.