Question 885962
Number 1 is not factorable but number 2 and number 3 are factorable.  Number 1 is solvable using the general solution obtained through Completing the Square and the solutions for it are:


{{{x=(-8+- sqrt(8^2-4*1*(-6)))/2}}}
{{{x=(-8+- sqrt(64+24))/2}}}
{{{x=(-8+- sqrt(88))/2}}}
{{{x=(-8+- 2sqrt(22))/2}}}
{{{highlight(x=-4+- sqrt(22))}}}