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