.. _combining_tactics: Combining tactics ================= In this last section we cover examples involving division. The key tactic here is called ``field_simp``: it clears denominators of fractions, which gets us back to a setting in which ``ring`` or ``polyrith`` can be applied. .. include:: 04_Combining_Tactics/01FieldSimp.inc .. include:: 04_Combining_Tactics/02Sphere.inc .. include:: 04_Combining_Tactics/03Binomial.inc