Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule quadraticequationstrategy.enter Location [] Term "Just (TCon relation1.eq [TNum 0,TCon arith1.minus [TCon arith1.minus [TCon arith1.power [TCon arith1.minus [TVar \"x\",TCon arith1.divide [TNum 7,TNum 2]],TNum 2],TCon arith1.times [TNum 2,TVar \"x\"]],TNum 8]])" Focus "Just (TCon relation1.eq [TNum 0,TCon arith1.minus [TCon arith1.minus [TCon arith1.power [TCon arith1.minus [TVar \"x\",TCon arith1.divide [TNum 7,TNum 2]],TNum 2],TCon arith1.times [TNum 2,TVar \"x\"]],TNum 8]])" Environment