hopen2impov
Junior Member
- Joined
- Aug 4, 2010
- Messages
- 66
SUBTRACT
(30x +22xy -7y) - (10x -23xy -20y)
30x +22xy -7y -10x +23xy +20y
30x -10x +22xy +23xy -7y+20y
=20x^2 +45x^2y^2 +13y^2
(30x +22xy -7y) - (10x -23xy -20y)
30x +22xy -7y -10x +23xy +20y
30x -10x +22xy +23xy -7y+20y
=20x^2 +45x^2y^2 +13y^2