Question

Write y=2x^2+8x+5 in vertex form. Please

Answer 1

$y=2x^2+8x+5\\ y=2(x^2+4x+\frac{5}{2})\\ y=2(x^2+4x+4-\frac{3}{2})\\ y=2((x+2)^2-\frac{3}{2})\\ y=2(x+2)^2-3$