Powers of x in polynomial expansion

[camboguy]

what am i doing wrong here? its an easy problem but what the heck am i doing wrong?

1. The

 

[Dustinsfl]

u⁵u^1/2=u^5+1/2=u^11/2

Your powers are wrong for u

 

[Dick]

The problem is with the second term. u^5*u^(1/3) is not u^6.5.

 

[Mark44]

u⁵u^1/2=u^5+1/2=u^11/2

Your powers are wrong for u

11/2 = 5.5, so there's nothing wrong here.