Ko tētahi o ngā mahi whakarūnā i te kīanga taurangi. Arā, ko te āta tirotiro i ngā wāhanga o te kīanga, me te kimi mai i tētahi tauwehe e pātahi ana ki ia wāhanga.
This is one means of simplifying algebraic expressions. Each part of the expression is examined carefully to try to find common factors.