Yes,you can use a TI-83 or 84 to graph it.You can then see that there is no real # solution. This is a polynomial in the 4th degree,you can substitute x values from -3 to 3 and sketch it. Look into your book for the upper and lower bound theorem,it might help to know that in even degree ,both end behavior go into the same direction.There's a negative sign in front of the leading term,so this time the poly ftn will have both ends facing downward.
READ your book too!!!!!!!!!!!