Test 4. competency: Adds polynomials
4A. Translate the following verbal phrase into mathematical phrase.
1. 3x+8
4B. add vertically
2.(3x+8) + (4x-3)
3. (7a²+3a-6) + (2a²-9a-1)
4C. Add horizontally
4. (8a-5) + (3a+2)
5. (4x²-5x+7) and (-6x²+3x-2)​