Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule quadraticequationstrategy.enter Location [0] Term "Just (TCon relation1.eq [TCon arith1.plus [TCon arith1.plus [TNum 49,TCon arith1.times [TNum 28,TVar \"x\"]],TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]]],TNum 7])" Focus "Just (TCon arith1.plus [TCon arith1.plus [TNum 49,TCon arith1.times [TNum 28,TVar \"x\"]],TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]]])" Environment