The equation is
.
Compare the equation with
.
a = 2, b =
and c = 6.
a) Now we can find discriminant value
\
(Substitute a = 2, b =
and c = 6)



b) The discriminant is positive, so the equation have two rational roots.
\c) Apply quadratic formula: 
(Replace
, a with 2, and b with
)
Product of two same sings is positive. \ \
\
(
) \ \

The solutions are
.
The discriminant value is
and the equation have two complex roots.
The solutions are
.