Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Firsts
Rule algebra.equations.coverup.onevar.minus-right Location [] Term "Just (TCon relation1.eq [TCon arith1.divide [TNum 9,TNum 4],TCon arith1.times [TCon arith1.divide [TNum 1,TNum 4],TCon arith1.power [TVar \"x\",TNum 2]]])" Focus "Just (TCon relation1.eq [TCon arith1.divide [TNum 9,TNum 4],TCon arith1.times [TCon arith1.divide [TNum 1,TNum 4],TCon arith1.power [TVar \"x\",TNum 2]]])" Environment