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