# Math Help - a problem about integral

1. ## a problem about integral

could you look at this problem please. thanks for now.

$\int_{2}^{4}\frac{\sqrt{ln\left ( 9-x \right )}}{\sqrt{ln\left ( 9-x \right )}+\sqrt{ln(x+3)}}dx$

2. ## Re: a problem about integral

Use the substitution t=6-x.