which expression is equivalent to 3/4x-1/4xy

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Use circumcenter theorem to solve for the given values

Factor the polynomial. b^2 + 4b + 4