Question

@Miracrown @hartnn , integration

Answer 1

\[\int\limits_{}^{} \frac{ (3-\sqrt{5x})^{7} }{ \sqrt{7x} }dx\]

Answer 2

you will be moving lot of constants here and there :P

u = 3 - sqrt (5x)
substitute!

Answer 3

u = 3- square root 5x
du = ?

Answer 4

du =.. .

Answer 5

du=-5/2sqrt5x

Answer 6

du=-5/2sqrt5x dx


isolate dx
and plug it into your function

Answer 7

Hold on a second!

Answer 8

-sqrt 5 /2
isn't it ?

Answer 9

-squareroot5 as well right? :P

Answer 10

what ?

Answer 11

\[-\frac{ \sqrt{5} }{ 2\sqrt{x} }\]