Solve the simultaneous equations
x2+y2=20 x^2 + y^2 = 20 x2+y2=20 3x−y=10 3x - y = 10 3x−y=10223 exam-style questions on Edexcel GCSE Maths Quadratic Simultaneous Equations. Each one has a worked solution and a mark scheme showing where the marks go.