Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule algebra.equations.quadratic.distr-square Location [1,0,0] Term "Just (TCon relation1.eq [TNum 0,TCon arith1.minus [TCon arith1.minus [TCon arith1.plus [TCon arith1.minus [TCon arith1.power [TVar \"x\",TNum 2],TCon arith1.times [TNum 7,TVar \"x\"]],TCon arith1.divide [TNum 49,TNum 4]],TCon arith1.times [TNum 2,TVar \"x\"]],TNum 8]])" Focus "Just (TCon arith1.plus [TCon arith1.minus [TCon arith1.power [TVar \"x\",TNum 2],TCon arith1.times [TNum 7,TVar \"x\"]],TCon arith1.divide [TNum 49,TNum 4]])" Environment Rule algebra.equations.linear.flip Location [] Term "Just (TCon relation1.eq [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],TNum 0])" Focus "Just (TCon relation1.eq [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],TNum 0])" Environment