Question 139448
-2X^2+6X+8=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
X=(-6+-SQRT[6^2-4*-2*8])/2*-2
X=(-6+-SQRT[36+64])/-4
X=(-6+-SQRT100)/-4
X=(-6+-10)/-4
X=(-6+10)/-4
X=4/-4
X=-1 ANSWER.
X=(-6-10)/-4
X=-16/-4
X=4 ANSWER.