Question 1173107

Please help me solve this quadratic equation and round the answer to the nearest hundredth

I also need to know the correct "form." I'm new to quadratic equations and am struggling

form options
(x+[])^2=[]  or  (x-[])^2=[]

equation:

x^2+6x+7 = 0 
<pre>{{{matrix(2,3, x^2 + 6x + 7, "=", 0, ax^2 + bx + c, "=", 0)}}}

{{{matrix(1,3, x^2 + 6x + 7, "=", 0)}}} 
{{{matrix(1,3, x^2 + 6x + ((1/2)b)^2, "=", - 7 + ((1/2) * b)^2)}}} ---- Taking {{{matrix(1,3, 1/2, of, b)}}}, squaring it, and then ADDING the result to both sides
{{{matrix(1,3, x^2 + 6x + ((1/2) * "+ 6")^2, "=", - 7 + ((1/2) * "+ 6")^2)}}} 
{{{matrix(1,3, x^2 + 6x + ("+ 3")^2, "=", - 7 + ("+ 3")^2)}}}
{{{matrix(2,3, (x + 3)^2, "=", - 7 + 9,
(x + 3)^2, "=", 2)}}}
{{{matrix(1,3, sqrt((x + 3)^2), "=", ""+-sqrt(2))}}} ----- Taking square root of both sides
{{{matrix(1,3, x + 3, "=", ""+-sqrt(2))}}}
{{{matrix(1,3, x, "=", ""+-sqrt(2) - 3)}}} ------ Subtracting 3 from both sides
{{{highlight_green(matrix(2,7, x, "=", sqrt(2) - 3, "=", - 1.585786438, "=", highlight(- 1.59), x, "=", - sqrt(2) - 3, "=", - 4.414213562, "=", highlight(- 4.41)))}}}