Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule topform.enter Location [] Term "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.power [TVar \"x\",TNum 2],TNum 9],TCon arith1.minus [TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.times [TNum 6,TVar \"x\"]]])" Focus "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.power [TVar \"x\",TNum 2],TNum 9],TCon arith1.minus [TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.times [TNum 6,TVar \"x\"]]])" Environment