X square 2 x minus y
- x square y square 2 x minus 4 y 4 0
- factorise x square y square minus x square 2 xy
- 9 x square 2 x square minus y square
- x square y square minus x square 2 xy
- x 2 y square 4 2 x minus y square
- x square minus y square into x 2 y
- x square 2 1 upon x square minus y square
- x square minus y square 2 x 1
- factors of x square 2 x minus y square 1
- x square 2 x minus y square 2 y
