f(x) = (x-1)² + 19 is the answer
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
6.7m questions
8.8m answers