Find, using algebra, all the real solutions to the equation
a2=8aa^2 = 8\sqrt{a}a2=8a
b4−5b2−14=0b^4 - 5b^2 - 14 = 0b4−5b2−14=0
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.