Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule quadraticequationstrategy.exit Location [1,0] Term "Just (TCon relation1.eq [TCon arith1.times [TNum 4,TCon arith1.minus [TNum 10,TCon arith1.power [TVar \"x\",TNum 2]]],TCon arith1.minus [TCon arith1.unary_minus [TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]]],TCon arith1.times [TNum 20,TVar \"x\"]]])" Focus "Just (TCon arith1.unary_minus [TCon arith1.times [TNum 4,TCon arith1.power [TVar \"x\",TNum 2]]])" Environment