Hi, can someone double check this for me?

Also sorry about the badly written problem. What programs do you all use? I tried word but i couldn't import it over to here.

Also, when you do the power, you do that keep that sign first and then incorporate either the - or + sign next right?

So lets say x=-2, for (x^5)-(X^3)=

you do -2*-2*-2*-2*-2 which is -32 and then you do -2*-2*-2 which is -8. Then the last step is to subtract -32- (-8) but since there is two neg. signs, -8 becomes a positive 8 right? so it is -32+8

Thanks