## anonymous 4 years ago rationalize the denominator. http://www.mathway.com/math_image.aspx?p=SMB02FSMB03-5xSMB02ESMB034SMB02eSMB03SMB10SMB02RSMB038x+10SMB02rSMB03SMB02fSMB03?p=67?p=42

1. anonymous

$\frac{5 x^4 \sqrt{8 x+1}}{\sqrt{8 x+1} \sqrt{8 x+1}}=-\frac{5 x^4 \sqrt{8 x+1}}{8 x+1}$

2. anonymous

How. Just hwo do you do it so quickly? ;)

3. anonymous

wow, put a lot of effort into that, thanks

4. anonymous

$-\frac{5 x^4 \sqrt{8 x+1}}{\sqrt{8 x+1} \sqrt{8 x+1}}=-\frac{5 x^4 \sqrt{8 x+1}}{8 x+1}$ I forgot a minus sign.