Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule algebra.equations.quadratic.same-con-factor Location [] Term "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.minus [TCon arith1.times [TVar \"x\",TCon arith1.plus [TCon arith1.times [TNum 2,TVar \"x\"],TNum 10]],TCon arith1.times [TNum 2,TCon arith1.power [TVar \"x\",TNum 2]]],TNum 20],TNum 0])" Focus "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.minus [TCon arith1.times [TVar \"x\",TCon arith1.plus [TCon arith1.times [TNum 2,TVar \"x\"],TNum 10]],TCon arith1.times [TNum 2,TCon arith1.power [TVar \"x\",TNum 2]]],TNum 20],TNum 0])" Environment Rule algebra.equations.linear.distr-times Location [] Term "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.minus [TCon arith1.plus [TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.times [TNum 20,TVar \"x\"]],TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]]],TNum 40],TNum 0])" Focus "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.minus [TCon arith1.plus [TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.times [TNum 20,TVar \"x\"]],TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]]],TNum 40],TNum 0])" Environment