6k3 Name Adding and Subtracting Polynomials EXAMPLE Add (2x + 4x + 8) and (x - 2x - x + 3). +4x - 2x + 2x + + 2x3 1 +3 3x Add: 4x -2x 2x +7x - X - X Subtract (2x - 4x-1) from (4x + 7x - 3x + 4). Find the opposite of the expression to be subtracted: (-1)(2x-4x - 1) -2x + 4x + 1 +7x - 3x + 4x + X x + 4x-2 +8 +3 + 11 +4 Directions Find each sum. 1. (5k - 9k + 12k - 3) and (k + 10k + k + 14) 2. (3y + 2y 7y) and (5y 2y + 2y + 9) + 1 + 5 Directions Find each difference. Remember to add the opposite. 3. (4n - 8n + 3) (3n + 5n 4) 4. (6x4-x + 12x-16) - (5x + 2) Directions Solve the problem. 5. A nut company will close one of its two stores and combine all of the inventory (the nuts in stock) from the two stores. The following polynomials give the number of bags of dry-roasted peanuts in each store: Lakewood store: Downtown store: 3x-x+4 Find the combined inventory of the dry-roasted peanuts. Chapter 5, Lesson o 313-47K #124-3 K40317 #BHE/of