Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule zeroform.enter Location [] Term "Just (TCon relation1.eq [TNum 0,TCon arith1.times [TCon arith1.plus [TVar \"x\",TNum 5],TCon arith1.minus [TVar \"x\",TNum 8]]])" Focus "Just (TCon relation1.eq [TNum 0,TCon arith1.times [TCon arith1.plus [TVar \"x\",TNum 5],TCon arith1.minus [TVar \"x\",TNum 8]]])" Environment