1. (4x²+3x) + (7x+5) = ?
(Select) 4x²+10x+5 4x² +10x 11x² +8x

2. (9x+4) + (4x²+9)
(Select) 13x+13 4x²+9x+13 8x²+18x+4

3. (3x²+2x+4) + (9x+2x²+2)
(Select) 5x²+11x+6 12x²+4x+6 5x²+4x+6

4. (2x+4) + (4+2x) + (3x²+4+2x)
(Select) 3x²+8x+12+ 3x²+7x+12 3x²+6x+12

5. (3x+3) + (-3x-4)
(Select) -6x+1 6x-7 -1

6. (9x²+6x+3) + (4x²+7x+1) +(4x)
(Select) 13x²+17x+4 12x²+13x+7 13x²+13x+7

7. (4x²+2) + (3x+5)
(Select) 7x²+7 4x²+3x+7 7x+7

8. (3x²+15x+9) + (2x+7) + (4x²+3)
(Select) 9x²+17x+19 7x²+17x+19 5x²+21x+19

9. (2x+5) + (4x+9)
(Select) 11x+9 6x+15 6x+14

10. (8x²+4x) + (7x²+2)
(Select) 15x²+4x+2 15x²+6x 14x²+4x+2

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