Question

What’s the vertex of #8 ? Please help!!!!

Answer 1

$y = x^2 + 2x + 1$

It's already a square; we don't need to add anything to complete the square.

$y = (x + 1)^2$

That's a vertex at x = -1.   The corresponding y is y=0.

Answer: Vertex at (-1,0)

As for the other questions cut off there, the axis is the vertical  line x = -1 and the range is y ≥ 0.