Mathematics 0580 · Algebra and graphs
Simultaneous and quadratic equations
Original revision summary · Syllabus edition awaiting review · Cambridge alignment awaiting review
Key idea 1
Simultaneous equations: eliminate one letter by adding or subtracting the equations, then substitute back.
Knowledge check · unscored
Solve x + y = 10 and x − y = 4.
0/5000 · On this device