Verify that x=3+3x=3+\sqrt{3}x=3+3 is a solution of the equation
x+12=x3 x + \sqrt{12} = x\sqrt{3} x+12=x3Verify that x=712\displaystyle x=\frac{7}{12}x=127 is a solution of the equation
93x−1=33 9^{3x-1} = 3\sqrt{3} 93x−1=33233 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.