Question 195103
{{{6x^2 + 12x = 0}}}
{{{6x(x + 2) = 0}}}
So either 6x=0  or x+2 = 0
x =0 or x = -2


2)
{{{2x^2 - 2x -1 = 0 }}}
Use this URL for quadratic equations --> http://www.algebra.com/algebra/homework/quadratic/quadratic.solver

*[invoke quadratic "x", 2, -2, -1]