Name: ___________________________________ Math 7.2, Period _____________ Mr. Rogove Date: _______________ Alg1M1L3: Adding and Subtracting Polynomials 1 Learning Objective: We will add and subtract polynomials. (Alg1M1L3) Activating Prior Knowledge: We know how to combine like terms with monomials 4! ! − 5! − 3! ! + !! ! + 12! 3! ! ! ! + 2! ! ! ! − 12! ! ! ! − ! ! ! ! Concept Development: We need to use the commutative property when adding polynomials to group like terms together. Example: 5! ! + 3 + (! ! − 6) We need to use the distributive property when subtracting polynomials to distribute the negative. Example: 13! ! − 2! ! − (2! ! + 6! ! ) We can add or subtract vertically or horizontally. Example: 5! ! − 3! + 12 + (3! ! − 12! − 1)
