Solve algebraically the simultaneous equations
2x2−y2=1 2x^2 - y^2 = 1 2x2−y2=1 x+y=2 x + y = 2 x+y=2223 exam-style questions on WJEC GCSE Maths Quadratic Simultaneous Equations. Each one has a worked solution and a mark scheme showing where the marks go.