algerbil

  1. GAdams

    Algerbil

    I have to simplify this to get the equation of a circle: (x-4)^2 +4^2 + (x-2)^2 - 2^2 +11 = 0 I get: (x-4)^2 + (x-2)^2 +16 + 4 + 11 = 0 (x-4)^2 + (x-2)^2 = -31 ....where am I going wrong?