Which function in vertex form is equivalent to f(x) = x² + x +1?
3
A.f(x) = (x + 1² + ²/
B.f(x) = (x + 2)² + 2/1/20
C.f(x) = (x + 1/² + ²/1/
4
D.f(x) = (x + 1/ 1³² + 1/
5
4