(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have volunteered to help a friend's son with his Algebra 2 (thinking - no problem, I've had Calc 1-3, differential equation, complex variables, probability / stats and so on.

So I start to help and the first questions:

Why aren't these rational expressions:

[tex]

\frac {\sqrt(x)}{(x+3)}

[/tex]

and

[tex]

\frac {\sqrt{(x-y)^2}}{(x)}

[/tex]

2. Relevant equations

3. The attempt at a solution

I know if the square root wasn't in the numerator they would be rational - at least I hope I'm correct.

I don't know why they aren't reational.

Thanks

-Sparky

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# Homework Help: Rational Expression

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