1. Combine Like Terms 8y – 5 + 12y – 6 -12x2 + 13x – 9x2 – 11x
Warm-up
Combine Like Terms
8y – y – 6
-12x2 + 13x – 9x2 – 11x
8y + 3 – 17y + 7
20y – 11
-21x2 + 2x
-9y + 10

2. How do we add and subtract polynomials?
Algebra I
EQ:
How do we add and subtract polynomials?
Standard: M.ALGI.4.22: Polynomials: Determine/Coefficient
M.ALGI.4.13: Polynomials: Add/Subtract

3. Skills Check

4. Adding and Subtracting Polynomials

5. To Find the sum of the polynomial. 1
To Find the sum of the polynomial. 1. Rewrite by dropping the parentheses 2. Then combine like terms
5a2 – 2b2

6. Find the difference of a polynomials. 1
Find the difference of a polynomials. 1. Rewrite by distributing (-1) correctly 2. Then combine like terms
– 5a2 + 2ab – 4b2

7. Find the sum or the difference of the polynomials.
– 2x – 1

8. Find the sum or the difference of the polynomials.
x2 + x – 3

9. Find the perimeter.
8x + 15

10. Find the perimeter.
12x + 22

11. Find the perimeter.
10x + 24

12. Homework