1. Model Polynomial Addition and Subtraction

2. Algebra Tiles 1 unit or -1 unit x units or -x units x2 units or

3. Model the following with Algebra Tiles
(2x2 – x) + (x2 + 3x – 1)
3x2 + 2x - 1

4. (2x2 + 6) – 4x2
-2x2 + 6

5. What is the expression modeled below?
(2x2 – 2x – 4) + (-x2 + 3x + 2)

6. To subtract polynomials, remember that subtracting is the same as adding the opposite. To find the opposite of a polynomial, you must write the opposite of each term in the polynomial:
–(2x3 – 3x + 7)= –2x3 + 3x – 7

7. Subtract (3x2 + 2x – 1) – (x2 + 4x – 2) Distribute the -1
Combine like terms
2x2 – 2x + 1

8. Try these… (5x2 – 2x + 3) + (6x2 + 5x + 6)