sara4555 sara4555 08-01-2018 Mathematics contestada What is x2 + 6x = x2 – 6x as a system? A. y = x2 + 6x y = x2 – 6x B. y = –x2 + 6x y = x2 – 6x C. y = –x2 – 6x y = x2 – 6x