2.  We will look at 3 different ways to
add polynomials:
1. Using algebra tiles
2. Horizontal method
3. Vertical method

3.  Group like terms and simplify.
 Example:
 (-x2 + 5x + 4) + (3x2 – 8x + 9)

4.  Line up like terms vertically, then add.
 Leave a space for any missing terms.
 Example:
 (3a2 + 8) + (5a – 1)

5.  Find the sum:
 (b – 10) + (4b – 3)
 (x2 – x – 2) + (7x2 – x)

6.  Just add the opposite!
Change all the signs of the subtracted
polynomial
Then add like terms
 Example:
 (y2 + 4y + 2) – (2y2 – 5y – 3)

7.  Find the difference:
 (5x2 + 4x – 1) – (2x2 – 6)

8.  Find the difference:
 (p2 + p + 3) – (-4p2 – p + 3)
 (-k + 5) – (3k2 – 6)

9.  Just like one-variable, but be EXTRA
careful grouping like terms.
 Example:
 (x2 – 2xy – y2) + (x2 + xy + y2)

10.  (2s2 – 5st – t2) – (s2 + 7st – t2)

11.  (c2 – 6d2) + (c2 – 2cd + 2d2)

12.  (-x2 + 9xy) – (x2 + 6xy – 8y2)
 (a2 – 3ab + 2b2) + (-4a2 + 5ab – b2)