GCSE Maths | Proof Last updated on 05 Jun 2025 any number: nany even number: 2nany odd number: 2n+1proving it is a multiple of 8: factorise 8 out and show 8( )proving it is a square number: factorise it and show ( )2 Previous GCSE Maths Test | Surds | Edexcel Next Explain how the development of renewable sources of energy is likely to affect the market for oil.