posted by Mike .
(Factoring a sum or difference of cubes) and (solving a polynomial equation).
divide by 2
now you have a sum of cubes
x=-1 or x = (1 ± ?-3)/2 or (1 ± i?3)/2
Factor the given equation into:
and use one of the identities:
to factor the given equation to linear and quadratic factors.
Hence solve the resulting linear and quadratic equations.