1. (5x2 + 2x) + (3x2 + x)
2. (-2x2 + y) + (4x2 + 5y)
3. (4x2 - 3x + 7) + (-3x2 - 9x - 7)
4. 10x - (-5x)
5. (9y2 + 2y + 11) - (- y2 + 2y - 6)
2. (-2x2 + y) + (4x2 + 5y)
3. (4x2 - 3x + 7) + (-3x2 - 9x - 7)
4. 10x - (-5x)
5. (9y2 + 2y + 11) - (- y2 + 2y - 6)
Answers & Comments
Answer:
1.8x²+3x
2.2x²+6y
3.x²-12x
4.15x
5.9y²-1(-y²)+17