Question

Which equation represents the vertex form of the equation y = x2 + 6x + 5?

Answer 1

Use the method of completing the square to express in vertex form.

Given

`y = x^2 - 6x + 11`

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 6x

`y = x^2 + 2(- 3)x + 9 - 9 + 11`, then

`y = (x - 3)^2 + 2`

• 
  `\bold{y= (x - 3)2 + 2}`

Answer 2

The vertex form is:y(x-3)2-4

:) Good luck