Question 40471
{{{2x^2 + 4x = -2}}}
{{{2x^2 + 4x + 2 = 0}}}
{{{2x^2 + 2x + 2x + 2 = 0}}}
{{{2x(x + 1) + 2(x + 1) = 0}}}
{{{(2x + 2)(x + 1) = 0}}}
{{{2x + 2 = 0}}} or {{{x + 1 = 0}}}
{{{2x = -2}}} or {{{x = -1}}}
{{{x = -1}}} or {{{x = -1}}}
*[invoke quadratic "x", 2, 4, 2]