Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule navigator.up Location [0] Term "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.plus [TCon arith1.plus [TCon arith1.times [TNum 9,TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.times [TNum 30,TVar \"x\"]],TNum 25],TCon arith1.power [TCon arith1.minus [TVar \"x\",TNum 5],TNum 2]],TNum 40])" Focus "Just (TCon arith1.plus [TCon arith1.plus [TCon arith1.plus [TCon arith1.times [TNum 9,TCon arith1.power [TVar \"x\",TNum 2]],TCon arith1.times [TNum 30,TVar \"x\"]],TNum 25],TCon arith1.power [TCon arith1.minus [TVar \"x\",TNum 5],TNum 2]])" Environment