Question 1169356
{{{y=2x^2+4x-3}}}

{{{y=2(x^2+2x-3/2)}}}

{{{y=2(x^2+2x+1-1-3/2)}}}

{{{y=2((x+1)^2-2/2-3/2)}}}

{{{y=2((x+1)^2-5/2)}}}

{{{highlight_green(y=2(x+1)^2-5)}}}


vertex  (-1,-5)