Write y = 2x2 + 8x + 3 in vertex form.

y = 2 * (x + 2) ² - 5

Step-by-step explanation:

y = 2 * x² + 8x + 3 v (h, k)

y = 2 (x-h) ² + k = 2x² - 4xh + 2h² + k

8x = - 4xh h = - 2

2h² + k = 3

8 + k = 3 ∴ k = - 5

Vertex form : y = 2 * (x + 2) ² - 5

y=2 (x+2) ^2-5

Hope this is right.-.