samepoore03 samepoore03 20-04-2020 Mathematics contestada Solve equation by using the quadratic formula. x + 4x = -4 a. X=-2 b. x=-4 C. d. X=-4, X = 4 x = 0, x = 4 Please select the best answer from the choices provided 0 A 0 B 0 C 0D