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## Homework Statement

Integrate: 6/(1+sqrt(7x))dx

## Homework Equations

the hint was that u^2=7x

## The Attempt at a Solution

by substituting u, i got the antiderivative of (12/7)(u/(1+u))du so i substituted again and ended up getting 12/7(1+sqrt(7x)-ln(sqrt(7x)+1)) but apparently that's wrong. please help!

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