Question 33711
*[invoke quadratic "x", 1, -2, -4 ]

Also, if you go back to where the equation was plugged into the quadratic equation:
{{{(-(-2) +- sqrt(20))/(2*1)}}}
It can be simplified to:
{{{(2 +- 2*sqrt(5))/2}}}
And further simplified to
{{{1 +- sqrt(5)}}} <font size ="-2">by canceling the 2's</font>
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