Question

Write y = x^2 - 2x + 20 in vertex form.

Answer 1

f(x) = (x-1)² + 19 is the answer

Answer 2

The vertex form of a quadratic function is given by. f (x) = a(x - h)² + k

f(x) = x² - 2x + 20

f(x) = x² -2x + 1 + 19

f(x) = (x-1)² + 19