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.minus [TNum 1,TCon arith1.times [TNum 2,TVar \"x\"]],TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.plus [TVar \"x\",TNum 2]])" Focus "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.minus [TNum 1,TCon arith1.times [TNum 2,TVar \"x\"]],TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.plus [TVar \"x\",TNum 2]])" Environment