Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule topform.enter Location [] Term "Just (TCon relation1.eq [TNum 0,TCon arith1.minus [TCon arith1.minus [TCon arith1.power [TVar \"x\",TNum 2],TCon arith1.times [TNum 6,TVar \"x\"]],TNum 4]])" Focus "Just (TCon relation1.eq [TNum 0,TCon arith1.minus [TCon arith1.minus [TCon arith1.power [TVar \"x\",TNum 2],TCon arith1.times [TNum 6,TVar \"x\"]],TNum 4]])" Environment