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## Homework Statement

Evaluate the definite integral from 0 to 18.

∫[x/(9+4x)^1/2]dx

## Homework Equations

## The Attempt at a Solution

I know to use u-substitution and I set u = (9+4x)^1/2. I can't figure out where i'm messing up because I keep ending up with very large numbers which are incorrect.