Using the method of u$-$substitution,

$25(2$x$5)4$dx$=$abf$($u$)$du

where

u$=2$x$5($enter a function of x$)$

du$=2$ dx $($enter a function of x$)$

a$=($enter a number$)$

b$=($enter a number$)$

f$($u$)=($enter a function of u$).$

The value of the original integral is $.$