Question 223957
{{{4x^2+8x+2=0}}}
First, determine whether there is anything common among all three terms -- yes, they all have the common multiple of 2.  Therefore, divide both sides by 2 to get:
{{{2x^2+4x+1=0}}}
Since we can't factor, we must resort to the quadratic equation.
Doing so yields:
x = {-0.293, -1.707}
.
Details of the quadratic equation to follow:
*[invoke quadratic "x", 2, 4, 1 ]