Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule quadraticequationstrategy.enter Location [1,1] Term "Just (TCon logic1.or [TCon relation1.eq [TVar \"x\",TCon arith1.divide [TCon arith1.plus [TCon arith1.unary_minus [TNum 4],TCon arith1.root [TNum 80,TNum 2]],TNum 4]],TCon relation1.eq [TVar \"x\",TCon arith1.divide [TCon arith1.minus [TCon arith1.unary_minus [TNum 4],TCon arith1.times [TNum 4,TCon arith1.root [TNum 5,TNum 2]]],TNum 4]]])" Focus "Just (TCon arith1.divide [TCon arith1.minus [TCon arith1.unary_minus [TNum 4],TCon arith1.times [TNum 4,TCon arith1.root [TNum 5,TNum 2]]],TNum 4])" Environment