Question

2(x+1) to the second power+ 3

Answer 1

(2(x+1)^2) + 3

The vertex of this parabola is (-1,3), as this equation is already in vertex form.

Answer 2

$2(x+1)^{2}+3$   $2(x+1)(x+1) + 3$   $2(x^{2} +2x+1)+3$   $2x^{2}+4x+2+3$   $2 x^{2} +4x+5$