So this is a diffrent that i got no clue what to do next because i it got highest Power on top not dominator (on bottom on divide)

limit x->infinity $\displaystyle x^4+x^5$ so i multi by $\displaystyle (x^4-x^5)/(x^4-x^5)$ after some simplifie i get $\displaystyle (x^8-x^10)/(X^4-x^5)$ and now i shall divide both with x^5 and at bottom i get -1 and at top im kinda confused

edit:it is suposed to be x^(10) im having truble to get that 0 to top for some reason its not x^(1)•0