Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule quadraticequationstrategy.enter Location [0] Term "Just (TCon logic1.or [TCon relation1.eq [TNum 0,TVar \"x\"],TCon relation1.eq [TCon arith1.times [TNum 2,TVar \"x\"],TNum 4]])" Focus "Just (TCon relation1.eq [TNum 0,TVar \"x\"])" Environment