1. Find the difference. (-6x + 2y -3) - (2x - 4y - 7)
A. -8x + 6y + 4
B. -8x - 2y - 10
C. -4x - 2y - 4
2. Find the difference. (4x2 + 3x + 2) - (2x2 + 2x + 1)
A. 2x2 + 5x + 3
B. 2x2 + x + 1
C. 2x2 - x - 1
3. Find the sum. (-6x + 2y - 3) + (2x - 4y - 7)
A. -4x -2y - 10
B. -8x -6y - 10
C. -4x + 2y + 4