What is the vertex form of y = - 2x^2 + 4x + 3?

y = - 2 (x - 1) ² + 5

Step-by-step explanation:

formula for the vertex: y = a (x - h) ² + k where (h, k) is the vertex

y = - 2x^2 + 4x + 3

y = - 2 (x² - 2x + 1) + 5

y = - 2 (x - 1) ² + 5

h = 1

K = 5