Close-Up Textbook Form 3 Teacher Book. 4 swallow 8 assert • ask students to do the task individually, but check as a class. Factored form is defined as the simplest algebraic expression in which no common factors remain. Finding the factored form is useful in solving linear equations. The following books have been han. A teacher’s edition is a special version of a textbook designed to help instructors better teach the material. You won't be able to put these down. 3 breeds 7 arouses any answers at this stage.