Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule algebra.equations.coverup.times Location [1] Term "Just (TCon logic1.or [TCon relation1.eq [TCon arith1.plus [TNum 7,TCon arith1.times [TNum 2,TVar \"x\"]],TCon arith1.root [TNum 7,TNum 2]],TCon relation1.eq [TCon arith1.divide [TCon arith1.minus [TCon arith1.unary_minus [TNum 7],TCon arith1.root [TNum 7,TNum 2]],TNum 2],TVar \"x\"]])" Focus "Just (TCon relation1.eq [TCon arith1.divide [TCon arith1.minus [TCon arith1.unary_minus [TNum 7],TCon arith1.root [TNum 7,TNum 2]],TNum 2],TVar \"x\"])" Environment