Evaluate the integral by making the given substitution.

x$3(10+$ x$4)4$ dx$,$ u $=10+$ x$4$

Step $1$

We know that if

u $=$ f$($x$),$

then

du $=$ f $\text{'}($x$)$ dx$.$

Therefore, if

u $=10+$ x$4,$

then

du $=$

dx$.$