Question 264944
2x^2-6x-14=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
x=(6+-sqrt[-6^2-4*2*-14])/2*2
x=(6+-sqrt[36+112])/4
x=(6+-sqrt148)/4
x=(6+-12.1655)/4
x=(6+12.1655)/4
x=18.1655/4
x=4.54 ans.
x=(6-12.1655)/4
x=-6.1655/4
x=-1.54 ans.