1. y=x^2 + 6x + 11

2. y=x^2+8x+34

3. y=x^2+4x+7

Convert each of these vertex form and find the vertex

Vertex = - b/2a

Therefore, you must change each of these eachs in the form of a+b+c. Take the coefficient to find the vertex.

1. x^2+6x+11 - > - 6/2 (1) = - 3

2. x^2+8x+34 - > - 8/2 (1) = - 4

3. x^2+4x+7 - > - 4/2 (1) = - 2