Write f(x) = 2.12 - 44x + 185 in vertex form. To write f(x) = 2x2 - 44x + 185, factor out from the first two terms. Next, form a perfect square trinomial keeping the value of the function equivalent: f(x) = 26.12 – 22x+ 121) + 185 = 242 The function written in vertex form is f(x) = (x-​