7x2 - 3x + 3y - 2y2 + y 2 - x(x - y)

[Mamluke13]

7x2- 3x + 3y - 2y2+ y2- x(x - y)
7x2 - 3x+-3y 2y2+ y2 -x2 -xy
4x +3y - 2y2 + y2 - x2 -xy
4x + 1y + y2 -x2 -xy

4x + 1y3 -x2 -xy
this is suppose to be the answer can yall help to see where i went wrong
6x2 -3x+xy+3y-y 2

 

[skeeter]

7x^2- 3x + 3y - 2y^2+ y^2- x(x - y)

use a caret "^" to denote exponents

7x^2- 3x + 3y - 2y^2+ y^2- x^2 + xy

now combine like terms ...