Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule quadraticequationstrategy.enter Location [] Term "Just (TCon relation1.eq [TCon arith1.unary_minus [TCon arith1.times [TNum 20,TVar \"x\"]],TNum 40])" Focus "Just (TCon relation1.eq [TCon arith1.unary_minus [TCon arith1.times [TNum 20,TVar \"x\"]],TNum 40])" Environment