Mathematics
a(x - y) - b(y - x)2 is equal to:
(x - y)(a - by + bx)
(y - x)(a - bx + by)
(x - y) (a - bx - by)
(x - y) (a - bx + by)
a(x - y) - b(y - x)2 is equal to:
(x - y)(a - by + bx)
(y - x)(a - bx + by)
(x - y) (a - bx - by)
(x - y) (a - bx + by)