Long division would take care of this nicely for you. In the box you will put this:[tex]5 x^{4}+0 x^{3} +3 x^{2} +0x+8 [/tex]. Don't forget to leave a place for the x's that aren't there. Then do the division. The answer is A. I believe that it would be near impossible to show you how to do long division of polynomials in this particular forum.