x=4y2−12x = 4y^2 - 12x=4y2−12
Work out the value of x x\,x when y=5y = 5y=5
Hence, work out the value of x x\,x when y=−5y = -5y=−5
296 exam-style questions on Eduqas GCSE Maths Substitution. Each one has a worked solution and a mark scheme showing where the marks go.