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 .