Not sure how to rationalize the denominator

**mathguy80** · April 9th 2011, 06:11 AM

Hi All,

Simplify the following expression

$ \dfrac { (b+c)^{\frac{-3}{8}} - (b-c)^{\frac{-3}{8}} } {(b^2 - c^2)^{\frac{5}{8}} } $

I am unclear on how to proceed with this problem. Your help is much appreciated. Thanks.

**Prove It** · April 9th 2011, 06:21 AM

Try multiplying top and bottom by $\displaystyle \left(b^2 - c^2\right)^{\frac{3}{8}}$ .

**mathguy80** · April 9th 2011, 08:03 AM

Ah cool! I see. So Rationalizing here is to try to get the power of the denominator = 1. That works out, Thanks!

Thread: Not sure how to rationalize the denominator

LinkBack

Thread Tools

Display

Not sure how to rationalize the denominator

Similar Math Help Forum Discussions

Rationalize the denominator

Rationalize the denominator

rationalize the denominator

Rationalize the Denominator

Rationalize each denominator

Search Tags