25) The quadratic function f(x) = x2 + 2x - 1 is expressed in standard form as A) f(x) = (x+1)2 - 1 B) f(x) = (x+1)2 + 2 C) f(x) = (x+1)2 - 2 D) f(x) = (x+1)2 + 1 ote mand​